Page crashes on V9. Browsers: wait or kill page over and over

Screenshot 2025-08-22 224325

I am working fine, projects seems to go smooth.
As soon as I reach V9 it starts crashing and loading for ever the caht window.
I do a fork on V8 as soon as I can go back and then
the fork will crash as soon as it reaches v9.
Any idea?
Thanks!