The first fix handed Android's focus back from inside the keys' Click
handlers — which fire inside the UP event's dispatch, and Avalonia's
own view requests focus for itself after every handled touch dispatch
returns (AvaloniaView.DispatchTouchEvent, decompiled from 12.1.1). So
the platform's request ran after ours and undid it microseconds later,
which is exactly what the phone showed: the terminal still lost focus.
The return is now posted onto the main looper, landing one message
after the dispatch that stole, and it is wired at the row for both
halves of a press — DOWN steals too, and Click only exists for UP, so
a keyboard detached at DOWN would otherwise stay detached for the whole
length of the press. Check 11.10a now also says what a tolerable blink
looks like against a failure that stays.
Focusable=false was only ever half the fix, and its remark now says so:
Avalonia's focus stays on the NativeWebView, but the touch that presses
a key still hands Android's native focus to Avalonia's input view — the
platform moves it before Avalonia decides anything. The WebView's input
connection dies with it, the keyboard swaps to its no-input layout, and
the inset churn parks it over the very row that was tapped.
Each key now returns that focus once its byte is on the wire, through a
sibling of SoftKeyboard that walks the decor view to the one WebView
this application has. Free when nothing moved. Check 11.10a is the
phone-in-hand proof.