Ios. Tabs icons collapse to left during transition

Hello. I have this weird bug that is difficult to describe. I am already using ios9 patch. This bug happens intermediately when you click some other tab to change location, all icons in the tabs kind-of shrink/collapse to the left of the screen, before returning to their normal position split-second later.

Anyone have any clue where to start looking? At this point I am not sure what is causing this.

Thanks

Just verified that this is happening on ios8 but not on ios9