In fact, this was also a problem that gave me a headache. I couldn't find the reason at the time. Later I found out that it was a bug in the IE6 browser, but I didn't pay attention to this problem anymore.
Today I found on Blue Classic that some netizens have encountered the same problem, and the responders below don’t seem to know what caused it. I feel that there are still many friends who will encounter this problem. So here is an explanation of the reason for this bug. I hope it will be useful to everyone!
The code statements that cause GIF to stop are generally in the following form: