Page jumps when I press Backspace key while typing a comment on Facebook

I'm having exactly the same problem on my laptop using Chrome. Been going on for a few weeks now.

When typing comments in Facebook using Chrome or Microsoft Edge, if I use the backspace key on my keyboard, the entire window jumps up a page so where I was typing is now just off the top of my screen and I have to scroll up to see what I'm typing and if I have to use my backspace again, it scrolls off the top, again.

Is anyone else's Facebook page jumping like this? It only happens on Facebook too by the way.

Yes mine is doing the same thing, has been like it now for a couple of weeks! tried everything, nothing works!

I am having the issue with Chrome.

Yes, it is driving me nuts, too!

mine happens on Google Chrome and Edge - and only affects Facebook - driving me nuts! Only does it on my desktop pc