Can no longer interact with Scheduler

I don’t know what happened, but from one day to the other the scheduler stopped allowing interactions with it. I can no longer click on it, create anything, change from day/week/month, or even highlight the text in the header.
The code hasn’t been touched in weeks and this just happened from one day to the other without any interference with the project. Any ideas?

Hello @Otto_Dobretsberger ,

It’s not some known issue and it’s hard to suggest what exactly goes wrong without more details on how to reproduce it, or a demo which I will be run locally and reproduce the issue.