Ion-select popover not working/rendering as expected while closing keyboard

I have a ion-select (popover) which has enough options so that it becomes a scrollable select list.

The issue is, that when the ion-select is selected while the keyboard is displaying then the ion-select list is not scrollable as expected any more, because (my guess) the height of the webview is miscalculated while closing the keyboard.

I have posted this to stackoverflow with pictures (https://stackoverflow.com/questions/59429226/how-to-make-ion-select-popover-render-correctly-after-input-focus-changes-from-k)

Anyone experienced this before and may have a solution?

Is there a way for me to force the usage of the “correct” webview height?