Just got a runtime error in UI (build 24343) when I deleted a newly created rule. Before deleting this rule, I copied reactions to it from another rule. It also contained local variables (if that matters).
TypeError: Cannot read properties of undefined (reading 'getID')
at Data.getLongID (http://192.168.**.**:8111/client/Data.js:172:37)
at Data.toString (http://192.168.**.**:8111/client/Data.js:164:55)
at Data.getBusName (http://192.168.**.**:8111/client/Observable.js:65:32)
at RuleEditor.subscribe (http://192.168.**.**2:8111/client/Observer.js:91:200)
at RuleEditor.updateCurrentServiceValue (http://192.168.**.**:8111/reactor/fi-FI/lib/js/rule-editor.js:1094:34)
(macOS Sequoia & Chrome)