Instagram's in app browser overlays my PWA

Hi, I’m use ionic for PWA, in mobile browser it looks good, bottom navigation bar doesn’t overlay app
image1

But if I open my PWA from Instagram account link (in Instagram in app browser)
WhatsApp Image 2020-02-12 at 12.49.32

I have tried to check User-Agent, find ‘Instagram’ and add bottom-padding:40px, it works on Iphone 6, but on Iphone X 40px is not enough.
So, I think, that it is not good solution.