Looks like a wild goose chase. Sorry about that. It’s fine on another laptop and also on a tablet. I think I have to blame the issue on the original (old) laptop I used. It’s happening on my live site and local install … I’m sure it’s got to be at my end. I tried the old reboot trick etc. to no avail … ho hum … I’ll keep digging.
Thanks so much for your quick response, and sorry for the red herring.