Floaty button shifts down for a split second (initially placed above hidden tab bar)

[jenlai1345]

Hi,

My Floaty button is placed in my UITableViewController which automatically hides tab bar when pushed.

However, when this view is pushed to the stack, I can see the floaty button shows up on the screen, and after about 0.3 seconds, it is shifted down (for about the height of tab bar).

I think this is caused by it initially places itself some distance to the tab bar and when tab bar is hidden, it automatically moves itself now.

Is there any way to eliminate this behavior in order to improve UX?

Thank you very much!