iOS 13: popover content is blinking

Hello,

I show UITableViewController in popover

custom cell has UITextField

when UITextField becomes the first responder then displaying virtual keyboard causes to change popover arrow position and popover content is blinking

it happens only if popoverPresentationController.permittedArrowDirections is UIPopoverArrowDirectionLeft or UIPopoverArrowDirectionRight

I could not see such behavior in iOS 12, it happens only in iOS 13

I captured a video of blinking with slow animation

https://www.dropbox.com/s/arlshxuxj6v6aso/popover%20content%20blinking.mov?dl=0

is there a way to avoid such blinking?

Best Regards,

Vladimir.