Connecting a pendrive caused a YouTube video to pause

I was watching YouTube, connected a pendrive, typed the password and the moment I pressed [Enter] the video paused.

I tried it a second time and the video didn’t get paused.

Maybe it’s only on the first time since booting?

Or maybe the [Enter] key press bleed from the password pop up into the video itself?

I haven’t been able to reproduce it since updating to 6.7