That's what I experience also. And it is not consistent. When I posted the original message, could not type anything as the cursor would disappear in 2-3 seconds. And then, a few hours later I had no problem typing in the Get info fields. This morning? Failed again. And then later it worked again.
I appreciate the suggestion by Old Toad about restarting in Safe Mode, but with this off-again on-again behavior, it will be difficult to tell what is the problem. And if it DID go away, how to tell which loaded font, login item, startup items, etc., is causing it? Back in the MacOS 9 and earlier days, you could move things into and out of the Extensions folder to see which one was the problem. Now, I don't know.
And it's not just this when I say i wish I could pay a subscription fee for a maintained and updated version of Photos. I cannot get Faces to stick and have given up on trying to use it on my large photo database (some stay, some go, and I've applied them multiple times). I have issues with iTunes (or should I say Music) that does not work consistently as it used to. But I'm not in the demographic from which Apple makes its money (I don't use the subscription service, I buy my music).