That sounds really strange. I have never encountered anything like that.
Regardless, I went in today and did a number of software updates. I also changed some things on our server and rebooted the server, which sometimes clears out some gremlins that shouldn't be there.
Everything
seems to be working fine... but it is annoying when I get notices from people who are having trouble, and I can't replicate the issue. I can only guess and try to look for problems. I know that one of the publishers of an add-on product I use was complaining that every time Chrome updated, it caused problems with his add-on. Chrome would update, the guy would fix the product so that it worked with the new version of Chrome... and then Chrome would update again. He called it a software "arms race"