Calendar huge response time after recurrence event status change (multiple user selected)

[somogyi]

Hi

Install details:
Egroupware docker 23.1.20240304

We noticed an issue with calendar response time when we change an event status in recurrence event line.

The steps to reproduce:

1. Create an event with daily recurrence
2. In the left panel, select multiple users to show more than 4 calendars
3. Choose an event from recurrence line and right click and “change your status” (exception edit)
4. After changed status the site go to unresponsive state, so you cant click anywhere and after a while the tab will completely crash

The prblem are reproducable in any browser.

Can you help with this?

Thank you!

BR.,
Z