Pressing the down arrow key causes it to move a whole screen rather than one line... (sigh)

I don't see anything weird in "about:version". Nothing weird is showing up in Chrome's TaskManager (shift-esc) either.

I've successfully blocked the various popup elements and the spawned windows using uBlock Origin, so that's good enough for now. I don't feel like stripping Chrome bare and/or reinstalling - it's not worth the time.

It is a bit disconcerting though...

Thanks.

Cheers,
Scott.