I first noticed this in firefox(my browser of choice, writing this thread with it),
When visiting some sites like youtube or anything that embeds disqus(e.g kissanime) sometimes it happens that after writing for a while I can't input any more text at all, but every other app works as it should.
I "fixed" this with a restart and I lived with it until I installed skype for some online college classes and the same issue appeared pseudo-randomly.
Except this time I notice that opening some other app can effect this, e.g opening github-desktop let me input again in both firefox and skype.
I'm on testing but this issue goes rather back, anyone else had this problem?