1. Install FireFox 93.0 x64 En browser. (All plugins are disabled)
2. Log in to your account ITCH.IO .
3. Go to any pages of your projects, assets or games. In my case for example:
https://wenrexa.itch.io/cursors6
4. Click the "Published" button
5. Left-click on the window (Details - Editable field project description)
6. Write any text, click on it and then on the window and again on the field.
7. Click on the red button at the top of the "Save" screen.
8. Result: in some cases it will save fine, but in others your browser will freeze and a black window with strange stripes will form.