Yes, zoom is at 100%, I think an altered zoom setting is indicated by a magnifying glass icon on the address bar, next to the little plus.
I’ve also tried changing the zoom & then using the zoom ‘reset’ button. The zoom issue was mentioned in a number of posts on this forum, so I did try that first, just forgot to mention it. I think most of the other reports I saw mentioned seeing a message along the lines of “Almost, not quite” or some other acknowledgement that the targets weren’t registering accurately. In case it helps track down the problem, I don’t see any messages of that kind.
I haven’t altered my DPI settings anywhere. On a system level, I think the default for xorg is 96dpi. Is there a setting in Brave I should check on? I didn’t see anything in settings and a search for ‘dpi’ in chrome://flags didn’t return any matches.