Hmmm...that is eaxctly what is happening on my desktop computer, whereas the laptop (non-touchscreen) works perfectly. The tip for Chrome's "Enable Touch Events" setting did not work. What's odd is that one one of my forums, the hovers are working OK, but on all the others it is not. I also get the full forum descriptions vs. the tooltips.
I know the browser symptoms have been going on for a couple of months. I will have to look back at what I have installed (something that might use a web interface, for instance) and see what I can find. I have minimal browser extensions, and they are ones I have had for years. Disabling the ad blocker or the computer's anti-virus had no effect either; both were my obvious thoughts.