Hi, I've been scratching my head for few days for the same problem I'm having.
When I initially tab into my web-app, the bottom tab bar renders beautifully, with the bottom 0px and height of 64px.
But the issue occurs when I leave the app and re-enter after few seconds, suddenly the tab bar container gets shrink down from where I expected to be leaving a horror gray area.
On Android shows no problem but with iPhone-which I think is because of Safari iOS bottom navigator-the bottom: 0px, doesn't get the right layout.
I'm attaching pictures to describe what I'm going through.
There's one more weird part. I have several other apps which basically has same code line, front-end and back-end, but only two of them seem to show the same bug.
Is this something to do with the native? Would appreciate any suggestions! Thank you,