That's because you're using Firefox on Linux. I have literally no fucking idea how they managed, but all these bugs are only present in Firefox on Linux. Chrome

That's because you're using Firefox on Linux. I have literally no fucking idea how they managed, but all these bugs are only present in Firefox on Linux. Chrome works everywhere, Firefox on Windows works, it's just Firefox on Linux that has that problem. Skype's web client in Firefox on Linux also used to have the crash-on-paste problem. I suspect there is some framework somewhere in there that both of those used and it was crashing, but Microsoft updated to a newer version while Twitter have not, for whatever reason.