ios - Unwind Segue from Modal/Popover resulting in Unbalanced calls to begin/end appearance transitions -

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i have following setup:

nav controller -> vc1 -push--> vc2 -popover or modal segue--> vc3.

vc3 unwinding vc1.

when segue vc2 vc3 popover , modal, unwind ends in warning: unbalanced calls begin/end appearance transitions uiviewcontroller"

if segue vc vc push, warning gone.

enter image description here idea how rid of warning or why showing?

it's bug. ignore (or, if want citizen, file bug report apple).


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