Viewport does not work correctly on Android devices

[AikoSora]

--tg-viewport-stable-height when opening the application shows the normal size (on my device at 715px), after collapsing and unfolding the application, this number changes to 62px until, for example, I scroll the site. However, after scrolling, the value of the variable changes to 819px.

The most interesting thing is that this has never happened on iOS devices