I really like this add-on, as I can just use messenger and not be disturbed by the rest of facebook. Unfortunately, it just makes the whole messenger part run so incredibly slow that I've ended up giving up using this tool altogether. I hope to be able to come back later and it might run better. The problems are there even though both firefox and SimpleUI are updated to the latest versions. Then it can take several minutes to load messenger. But if I turn it off, we're talking seconds.

Thank you for making this. I was worried I'd have to keep a tab open on FB itself for Messenger once they turned off the dedicated Messenger site and its associated extensions would no longer work. This is perfect timing, much appreciated.

I very much like the changes to the UI. It makes using FB Messenger a more calming and pleasant experience.