[Solved] All 'Save' actions remain hanging

Since a little while all 'Save' actions hang on the spinner that keeps running. This while the save already happened. To see that I need to refresh the page.

I had this with Create comment, Create cross-post, and soon I'll know if it happens with Create post too.

Note that the refresh caused the cross-post not to be marked as such, and it looks like I duplicated a topic independently now.. this post should be a cross-post of this one.

Am using Firefox 105.0.3 on Ubuntu 22.04