Layout screen size "bugs" on FR

I was messing with my layout lately, and found out depending on the screen size, some animations triggers fails, always showing or never showing, not sure why it happens, has anyone found workarounds here?

My solution was to deactivate them with a @media untill I can find a real solution to make them work, what's weird is that they work within SpaceHey so it's surely something underlying in how FriendRewind handles screen sizes such as mobile phones and tablets screens...

Might have to think of other ways of making my layout different for mobile experience...