@Sakhniuk Thank you for sharing. I don't think that is the bug I am mentioning. My layout is as expected with the PWA at launch and for most of its use. The layout only breaks when the app is left running for some time.
Here is my app with a fixed bottom bar, the layout is correct, on scroll the bottom bar remains fixed to the bottom:
Here is my app on scroll down some time later (a few hours), the bottom bar shifts up.
apsm100
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