Anyone else suffers this new bug?

Yes. I had it happen to the 3 murcrows I kept as I was scrolling through. The image had already loaded and then it disappeared as I scrolled further.

Yes, it's been very buggy....

I was gonna guess which Pokémon they were but you keep the names I see

Mine is a little different. Pikachus for example, if I'm scrolling up or down, their head alternates from not wearing a hat to wearing one of the event ones. Also one of my Santa hat ones switches from that to the party hat one. My Pichu doesn't show it wearing Ash's hat anymore until I click on it.