Hi, using DayPilotCalendar from past years, it's seems that version 2020.4.3775 break DayPilotCalendar.UpdateWithMessage() function since it no longer display anything.
Rolling back to 2020.3.3769, UpdateWithMessage() display message.
Upgrade to 2020.4.3775, UpdateWithMessage() don't do anything (no other line of code modified).
Tryed with latest 2021.1.3782, nothing displayed.
it's seems to be break only from code-behind with UpdateWithMessage().
Tryed to turn off new function XssProtection="Disabled" introduced in the same version for same result.
All my tests are made with a simple DayPilotCalendar.UpdateWithMessage("TEST"); line of code