This is caused by a small typo in our code, we'll get that fixed for the next release! Thanks for helping!
Support Forum
Hi!
I just tried my last post but with 4.1.5 (and some adaptation) and I think this is fine now as requestPropagation() does not exist anymore.
Also, this ticket: https://github.com/bryntum/support/issues/567 is fine now. resourcesTab.resourceCombo.store is now accessible in beforeTaskEditShow.