Thank you sir, yes. That what I am talking about. I know that the class is added by visual composer, but the strange things is this happen only if I use wplms theme. I thought it maybe something conflict sir?
Well the issue is not related to wplms theme .These elements are of visual composer and animation classes adding to these elements are also of visual composer .
I suspect that this maybe appearing due to third party plugin most ultimate Vc addons or maybe kleo element plugin .
SO please try deactivating your third party plugins and recheck the issue .
Please also contact your webhost if they have any kind of caching enabled from their end ?
Hello, based on your reply, I try to turn on and turn off one by one of my plugin, and yes I find K-Element plugin make that animation. Now, the transition is gone and it's work like a charm. Thank you so much for your help guys!