[SOLVED] Posts, replies, and edits not posting from firefox (turned out being one of my extensions)

Here's a screenshot of the problem on dropbox

When I hit "reply" on someone's comment (in this case a post all the way over on lemmy.ca: https://reddthat.com/post/350705) it just grays out, and never posts the reply.

Plus, there are more comments on https://feddit.de/post/1392810 than show up on the reddthat version. I imagine that's probably just something I don't understand about lemmy?

I know switching to my phone and finding the comment on liftoff or wefwef allows me to post, which is why I'm hoping one of you knows an exact workaround, including how to use wefwef or liftoff to easily find the comment I'm trying to respond to.

Update 1:

It works on Google Chrome! Reddthat can post comments on other instances just fine using Google Chrome. It's only Firefox that's having this problem right now. (Meaning it's not actually a federation glitch.)

Update 2:

It was my bionic reader extension on firefox. Sorry Tiff. I did not mean to put you through all that debugging for a problem that wound up being a bad extension on my end.