Conflicting Set Reaction Groups Appear to Fire Simultaneously in Single Rule Evaluation

[gwp1]

Within a single rule evaluation pass, two mutually-exclusive Set Reaction condition groups both evaluated as TRUE and fired conflicting actions — one issuing cover.close, the other issuing cover.open — to the same entity, roughly 19ms apart. Both commands were dispatched to Home Assistant and both succeeded, with the later cover.open command effectively overriding the intended cover.close result and the blind staring at me like "what."

Environment
Rule: MBath Redux (rule-2c0ih079, folder: Blinds - Defers (Switchbot))
Target entity: cover.blind_tilt_5d (via HassController)
Conflicting groups: Privacy Close (-10) [HIGHEST PRIORITY] vs. Default/Open - No Deferral

Set Reaction groups within a rule are configured to be mutually exclusive via their condition logic — each subgroup of "Default/Open - No Deferral" explicitly requires Master Bath lights is FALSE, while "Privacy Close (-10)" requires Master Bath lights is TRUE. These conditions reference the same Rule State and should not be able to evaluate as true simultaneously within one rule pass. Only one group should fire per evaluation.

Actual Behavior

Both groups fired in the same evaluation cycle, dispatching opposing commands to the same cover entity within 19-35ms of each other. The cover.open command completed after cover.close, resulting in the blind ending up open when Privacy Close conditions (interpreted at time of trigger) should have closed it.

Relevant Log Excerpt
Yep. I even pulled logs.
(40 lines: 20 before and 20 after the conflicting group evaluations at 00:06:17.410–17.630)

[latest-26193]2026-08-03T00:06:14.658Z <ZWaveJSController:5:ZWaveJSController.js:890> ZWaveJSController#zwavejs handling event message
[latest-26193]2026-08-03T00:06:14.658Z <ZWaveJSController:5:ZWaveJSController.js:954> ZWaveJSController#zwavejs handling event { "source": "node", "event": "value updated", "nodeId": 50, "args": { "commandClassName": "Multilevel Switch", "commandClass": 38, "endpoint": 0, "property": "targetValue", "newValue": 99, "prevValue": 99, "propertyName": "targetValue" } }
[latest-26193]2026-08-03T00:06:14.658Z <ZWaveJSController:5:ZWaveJSController.js:966> ZWaveJSController#zwavejs handling node event value updated entity Light#zwavejs>50-0
[latest-26193]2026-08-03T00:06:14.658Z <ZWaveJSController:5:ZWaveJSController.js:976> ZWaveJSController#zwavejs node value updated: { "source": "node", "event": "value updated", "nodeId": 50, "args": { "commandClassName": "Multilevel Switch", "commandClass": 38, "endpoint": 0, "property": "targetValue", "newValue": 99, "prevValue": 99, "propertyName": "targetValue" } }
[latest-26193]2026-08-03T00:06:14.658Z <ZWaveJSController:5:ZWaveJSController.js:1230> ZWaveJSController#zwavejs update node 50 value "0:38:targetValue:" data { "source": "node", "event": "value updated", "nodeId": 50, "args": { "commandClassName": "Multilevel Switch", "commandClass": 38, "endpoint": 0, "property": "targetValue", "newValue": 99, "prevValue": 99, "propertyName": "targetValue" } }
[latest-26193]2026-08-03T00:06:14.659Z <ZWaveJSController:5:ZWaveJSController.js:1245> ZWaveJSController#zwavejs updating attributes for node 50 value "0:38:duration:"={ "value": 0, "unit": "seconds" }: Array(0) []
[latest-26193]2026-08-03T00:06:14.659Z <ZWaveJSController:5:ZWaveJSController.js:1270> ZWaveJSController#zwavejs setting Light#zwavejs>50-0.x_zwave_values.Multilevel_Switch_duration to { "value": 0, "unit": "seconds" }
[latest-26193]2026-08-03T00:06:14.659Z <ZWaveJSController:5:ZWaveJSController.js:1245> ZWaveJSController#zwavejs updating attributes for node 50 value "0:38:targetValue:"=99: Array(0) []
[latest-26193]2026-08-03T00:06:14.659Z <ZWaveJSController:5:ZWaveJSController.js:1270> ZWaveJSController#zwavejs setting Light#zwavejs>50-0.x_zwave_values.Multilevel_Switch_targetValue to 99
[latest-26193]2026-08-03T00:06:14.711Z <ZWaveJSController:5:ZWaveJSController.js:890> ZWaveJSController#zwavejs handling event message
[latest-26193]2026-08-03T00:06:14.711Z <ZWaveJSController:5:ZWaveJSController.js:954> ZWaveJSController#zwavejs handling event { "source": "controller", "event": "statistics updated", "statistics": { "messagesTX": 6218, "messagesRX": 13874, "messagesDroppedRX": 0, "NAK": 0, "CAN": 0, "timeoutACK": 0, "timeoutResponse": 0, "timeoutCallback": 0, "messagesDroppedTX": 0, "backgroundRSSI": { "channel0": { "current": -97, "average": -93 }, "channel1": { "current": -107, "average": -106 }, "channel2": { "current": -107, "average": -106 }, "channel3": { "current": -86, "average": -91 }, "timestamp": 1785715559933 } } }
[latest-26193]2026-08-03T00:06:14.762Z <ZWaveJSController:5:ZWaveJSController.js:890> ZWaveJSController#zwavejs handling event message
[latest-26193]2026-08-03T00:06:14.762Z <ZWaveJSController:5:ZWaveJSController.js:954> ZWaveJSController#zwavejs handling event { "source": "node", "event": "statistics updated", "nodeId": 50, "statistics": { "commandsTX": 85, "commandsRX": 108, "commandsDroppedRX": 0, "commandsDroppedTX": 0, "timeoutResponse": 0, "lastSeen": "2026-08-03T00:06:14.713Z", "rtt": 68, "rssi": -61, "lwr": { "protocolDataRate": 2, "repeaters": Array(1) [89], "rssi": -60, "repeaterRSSI": Array(1) [127] } } }
[latest-26193]2026-08-03T00:06:14.762Z <ZWaveJSController:5:ZWaveJSController.js:966> ZWaveJSController#zwavejs handling node event statistics updated entity Light#zwavejs>50-0
[latest-26193]2026-08-03T00:06:14.962Z <ZWaveJSController:5:ZWaveJSController.js:890> ZWaveJSController#zwavejs handling event message
[latest-26193]2026-08-03T00:06:14.962Z <ZWaveJSController:5:ZWaveJSController.js:954> ZWaveJSController#zwavejs handling event { "source": "controller", "event": "statistics updated", "statistics": { "messagesTX": 6218, "messagesRX": 13875, "messagesDroppedRX": 0, "NAK": 0, "CAN": 0, "timeoutACK": 0, "timeoutResponse": 0, "timeoutCallback": 0, "messagesDroppedTX": 0, "backgroundRSSI": { "channel0": { "current": -97, "average": -93 }, "channel1": { "current": -107, "average": -106 }, "channel2": { "current": -107, "average": -106 }, "channel3": { "current": -86, "average": -91 }, "timestamp": 1785715559933 } } }
[latest-26193]2026-08-03T00:06:15.093Z <Engine:INFO> Resuming reaction MBR Lamp ON (80%)/Repeat Conditions (re-mho04vm7-re-m7b73nz7-re-m6dz6200-1q2f02r5) from step 4
[latest-26193]2026-08-03T00:06:15.093Z <Engine:INFO> MBR Lamp ON (80%)/Repeat Conditions all actions completed.
[latest-26193]2026-08-03T00:06:15.106Z <Engine:NOTICE> Starting reaction MBR Lamp ON (80%) (re-mho04vm7)
[latest-26193]2026-08-03T00:06:15.109Z <Engine:INFO> MBR Lamp ON (80%) all actions completed.
[latest-26193]2026-08-03T00:06:17.410Z <Rule:INFO> MBath (AI generated) (rule-2c0ih079 in Blinds - Defers (Switchbot)) starting rule state evaluation; because predicate-state-changed Predicate#rule-2c0ih079/trig
[latest-26193]2026-08-03T00:06:17.410Z <Rule:INFO> MBath (AI generated) (rule-2c0ih079 in Blinds - Defers (Switchbot)) evaluated; rule state transition from RESET to 'SET'
[latest-26193]2026-08-03T00:06:17.414Z <Engine:INFO> Enqueueing reaction "MBath (AI generated)<SET>" (rule-2c0ih079:S)
[latest-26193]2026-08-03T00:06:17.414Z <Engine:NOTICE> Starting reaction MBath (AI generated)<SET> (rule-2c0ih079:S)
[latest-26193]2026-08-03T00:06:17.426Z <Engine:NOTICE> Starting reaction MBath (AI generated)<SET>/Privacy Close (-10) [HIGHEST PRIORITY] (rule-2c0ih079:S-grp2c0k359i)
[latest-26193]2026-08-03T00:06:17.426Z <Engine:INFO> MBath (AI generated)<SET>/Privacy Close (-10) [HIGHEST PRIORITY] all actions completed.
[latest-26193]2026-08-03T00:06:17.426Z <Engine:INFO> Enqueueing reaction "Blinds MBthR Close" (re-kx6addmw)
[latest-26193]2026-08-03T00:06:17.439Z <Engine:INFO> Resuming reaction MBath (AI generated)<SET> (rule-2c0ih079:S) from step 2
[latest-26193]2026-08-03T00:06:17.441Z <Engine:NOTICE> Starting reaction Blinds MBthR Close (re-kx6addmw)
[latest-26193]2026-08-03T00:06:17.441Z <Engine:INFO> Engine#1 perform cover.close on Entity#hass>cover_blind_tilt_5d with {  } by reaction Blinds MBthR Close (re-kx6addmw) step 1
[latest-26193]2026-08-03T00:06:17.441Z <HassController:INFO> HassController#hass perform cover.close on Entity#hass>cover_blind_tilt_5d with {  }
[latest-26193]2026-08-03T00:06:17.442Z <HassController:INFO> HassController#hass: sending payload for cover.close on Entity#hass>cover_blind_tilt_5d action: { "type": "call_service", "service_data": {  }, "domain": "cover", "service": "close_cover", "target": { "entity_id": "cover.blind_tilt_5d" } }
[latest-26193]2026-08-03T00:06:17.442Z <Engine:NOTICE> Starting reaction MBath (AI generated)<SET>/Default/Open - No Deferral (rule-2c0ih079:S-rule-2c0ih079-2c0ih07a)
[latest-26193]2026-08-03T00:06:17.442Z <Engine:INFO> MBath (AI generated)<SET>/Default/Open - No Deferral all actions completed.
[latest-26193]2026-08-03T00:06:17.442Z <Engine:INFO> Enqueueing reaction "Blinds MBthR Open" (re-lz20b071)
[latest-26193]2026-08-03T00:06:17.456Z <Engine:INFO> Resuming reaction MBath (AI generated)<SET> (rule-2c0ih079:S) from step 7
[latest-26193]2026-08-03T00:06:17.456Z <Engine:INFO> MBath (AI generated)<SET> all actions completed.
[latest-26193]2026-08-03T00:06:17.460Z <Engine:NOTICE> Starting reaction Blinds MBthR Open (re-lz20b071)
[latest-26193]2026-08-03T00:06:17.460Z <Engine:INFO> Engine#1 perform cover.open on Entity#hass>cover_blind_tilt_5d with {  } by reaction Blinds MBthR Open (re-lz20b071) step 1
[latest-26193]2026-08-03T00:06:17.460Z <HassController:INFO> HassController#hass perform cover.open on Entity#hass>cover_blind_tilt_5d with {  }
[latest-26193]2026-08-03T00:06:17.461Z <HassController:INFO> HassController#hass: sending payload for cover.open on Entity#hass>cover_blind_tilt_5d action: { "type": "call_service", "service_data": {  }, "domain": "cover", "service": "open_cover", "target": { "entity_id": "cover.blind_tilt_5d" } }
[latest-26193]2026-08-03T00:06:17.461Z <Rule:INFO> Rule#rule-2c0ih079 reaction rule-2c0ih079:S completed
[latest-26193]2026-08-03T00:06:17.584Z <HassController:INFO> HassController#hass action cover.close({  }) on Entity#hass>cover_blind_tilt_5d succeeded
[latest-26193]2026-08-03T00:06:17.584Z <Engine:INFO> Resuming reaction Blinds MBthR Close (re-kx6addmw) from step 2
[latest-26193]2026-08-03T00:06:17.584Z <Engine:INFO> Blinds MBthR Close all actions completed.
[latest-26193]2026-08-03T00:06:17.595Z <HassController:INFO> HassController#hass action cover.open({  }) on Entity#hass>cover_blind_tilt_5d succeeded
[latest-26193]2026-08-03T00:06:17.595Z <Engine:INFO> Resuming reaction Blinds MBthR Open (re-lz20b071) from step 2
[latest-26193]2026-08-03T00:06:17.595Z <Engine:INFO> Blinds MBthR Open all actions completed.
[latest-26193]2026-08-03T00:06:17.630Z <Engine:INFO> Resuming reaction MBath Lights ON (re-lwbbelj4) from step 3
[latest-26193]2026-08-03T00:06:17.630Z <Engine:INFO> Engine#1 perform dimming.set on Light#zwavejs>50-0 with { "level": 0.4 } by reaction MBath Lights ON (re-lwbbelj4) step 3
[latest-26193]2026-08-03T00:06:17.630Z <ZWaveJSController:INFO> ZWaveJSController#zwavejs performing dimming.set on Master Bath Lights (Light#zwavejs>50-0) with { "level": 0.4 }
[latest-26193]2026-08-03T00:06:17.630Z <ZWaveJSController:5:ZWaveJSController.js:2332> ZWaveJSController#zwavejs def { "endpoint": 0, "commandClass": 38, "property": "currentValue", "propertyKey": (undefined), "impl": Array(1) [{ "valueId": "+targetValue:", "value": { "expr": "max( 0, min( 99, round( 100 * ( parameters.level ?# 0 ), 0 ) ) )" } }] }
[latest-26193]2026-08-03T00:06:17.630Z <ZWaveJSController:INFO> ZWaveJSController#zwavejs action dimming.set set node 50 endpoint 0 value 38:targetValue: = 40
[latest-26193]2026-08-03T00:06:17.630Z <ZWaveJSController:5:ZWaveJSController.js:2009> ZWaveJSController#zwavejs _set_value(50,0,38,targetValue,(undefined),40)

My interpretation... which we all know how that can be lol:

• Line 00:06:17.426: "Privacy Close (-10) [HIGHEST PRIORITY]" group's conditions evaluate true → enqueues Blinds MBthR Close.
• Line 00:06:17.442, only 16ms later: "Default/Open - No Deferral" group's conditions also evaluate true in the same rule pass → enqueues Blinds MBthR Open.
• Both groups reference the same Master Bath lights Rule State with opposite required values (is TRUE vs. is FALSE), and both should not have been able to pass simultaneously.
• Both cover.close and cover.open service calls were dispatched to Home Assistant for the same entity (cover.blind_tilt_5d), 19ms apart, and both were reported as succeeded (00:06:17.584 and 00:06:17.595 respectively).
• Because cover.open was issued and acknowledged after cover.close, it effectively overrode the intended close action — consistent with the observed real-world behavior (blind did not end up closed).
• Impact

Any rule with multiple Set Reaction groups intended to be mutually exclusive can silently issue conflicting device commands within the same evaluation pass, with the outcome determined by non-deterministic command-arrival order rather than rule logic. This makes the rule's actual behavior unpredictable despite condition logic that appears correctly exclusive when reviewed in the UI.

I thought Set Reaction groups were expected to stop after the first match (if/elseif semantics) - OR are all groups are intended to evaluate independently every pass? If independent evaluation is by design, please give me some guidance on enforcing mutual exclusivity (or a built-in "stop after first match" option). My other option is back to multiple rules just for this one little thing the blinds have to do.