Thank you for all the good input but I'm confused about your notes on the "3 second thingy." I don't remember encountering this before, though I am not certain. I have encountered it multiple times in the last few days and for reasons I don't understand since it surely took me more than 3 seconds to read some of those posts and the response options, and that also doesn't explain why I couldn't respond to one poster in Chrome at all, even despite refreshing the page. All this was fine in Firefox. I guess I will switch to Firefox for now.
The 3 second error is basically another anomaly in regards to the latest chromium browser updates.
Sometimes you get a black reaction screen on the list of emojies and sometimes you get a 3 second warning. Post #38 is an example with a screenshot.
Both of these errors are caused by updates in the javascript functions i'm guessing so we are seeing the side effects in these two types of errors so far.
Yes, use Firefox for now since it's not a chromium based browser and the other chromium browsers will get fixed eventually by another update since many people will be complaining in Microsoft forums.
It's a common thing with these updates when Microsoft or Google push out something that the majority of people don't like and then they roll it back ... hopefully.