I have the same problem too. Need a solution fast!
I am using the free version of Photo Gallery. By the way, I seem to have fixed that one page by changing the alt text, but I now see that there are dozens more images with flickering information/descriptions in most other galleries, e.g. https://www.gullibletravels.net/my-photos/#bwg56/1314
Furthermore, the description does not flicker sometimes, depending on whether you are looking at the mobile phone version on portrait or landscape format, or on a laptop in normal or full screen mode.
Please advise! Thank you.
