same device (Asus 10" tablet, 4:3, Android 7), but FireFox:
At 1st try Browser never showed “real” full screen mode (tabs and address bar always visible). So none of the effects occured.
After entering a longer text I could enter “real” full screen mode (fade out browser tabs and address bar). And - as expected - swiping from top to bottom fades in the tabs and address bar again.
But currently I can not enter real full screen mode - I can not see the reason, sorry.
And - very astonishing: After switching back to “not full screen mode” I can shift out browser tabs by swiping in the edit field - hmmmm, unbelievable.
After that a blue drop appears, it can be shifted away also by swipe gestures.
A few minutes ago I thought it would be a good workaround: Use FireFox on tablet for Kurviger forum (I like FireFox and used it long time on PC, tablet and smartphone - but due a lot of performance and stability problems since ~ a half year I prefer to use chrome). But now I am not convinced any more…
It is quite difficult to reproduce the behaviour, because up to now I have not understood which proceeding causes that - meanwhile, after writing some more text, I tried to scroll back in edit field to top in “not full screen mode” - it does not work - hmmmm - tapping on preview field, scrolling and then scrolling edit field via swipe gesture helps ( but do not just tap in edit field - if the cursor is back, no scrolling to top is possible). By the way - I am still talking about FireFox behaviour.
I will finish for tonight and try to get a kind of screenshot film, if you are interested in - perhaps you see something which I do not recognize. I would use “AZ Screen recorder”, as far as I remember it can also show taps and gestures. Do you have a better recommendation?