Countdown in Presentation mode Impress

Hello I’ve created a countdown which works fine outside presentation mode in Impress. But I can’t get it working do start in presentation mode, the presentation then freezes and I have to exit it, but the macro runs in the background.
I’ll attach the countdown file.

Best regards
countdown.odp (22.2 KB)

or just ends ?

what OS, LO version etc … : This is the guide - How to use the Ask site? - #3 by Hrbrgr

tried to debug ?

Sure
Version: 24.2.5.2 (X86_64) / LibreOffice Community
OS: Windows 10.0 Build
the macros works fine, but is not shown directly in presentation mode, but when I reenter it, it works, here is a video of it
video_countdown