ios - Dots on UIBarButtonItem -

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i seeing dots trailing 1 of uibarbuttonitems (see image). don't show up; random. though have noticed opening modal or rotating device tends make them appear or disappear. specific button 1 it. button opens split view controllers master view.

enter image description here

i thought icon size big, changed icon , icon size, did not fix it. not setting title, icon. following ios hig specifies icons on navigation bar 22x22, 44x44 , 66x66.

has seen this? did around it?

did expand button itself. text/icon big , button small.


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