I know you are absolutely overburden with tasks to add new useless features to this site, but some stuff you have added isn’t working as it should.
When adding a review once in 7 (but sometimes more often), after hitting Save review, nothing happens. Page just freezes. In some rare cases it saves review after 10 minutes of doing nothing. But in most cases nothing happens. Only thing I can do is to reload the page. I haven’t found exact case what may trigger this unfortunately But it happens way too often.
Browser I’m using Firefox 70.0.1 (64-bit)