Hi there, It seems that the onClick of submenus in the Scheduler / DayPilot.Menu is no longer triggered. I would assume this to be introduced with version 2026.1.6811.
I can confirm it works fine on 2025.4.6770
I confirm the bug, it will be fixed shortly.
This regression is fixed now in the latest sandbox build (2026.1.6823).
If there is any problem, please let me know.