Whole UI stretches vertically on Teclast tablet #963

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1. tadelv

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   bugSomething isn't workingSomething isn't working

   UI

   needs-triage

   on Oct 6, 2026
2. tadelv commented on Oct 7, 2026

   

   tadelv

   on Oct 7, 2026

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   Confirmed — this is the native Android overscroll stretch effect, not a Decaid layout bug.

   Since Android 12, the platform replaced the old blue glow with a stretch effect that visually distorts scrollable content when you drag past the top or bottom edge. Decaid renders the skins in a flutter_inappwebview WebView, so when the skin is at its scroll limit, Android stretches the entire WebView content — which looks exactly like the whole UI stretching. It affects Streamline and Insight equally because both live in the same WebView container, and it doesn't reproduce in Tcl de1app because that's native Tcl/Tk with no WebView involved.

   The fix is to turn off overscroll on the WebView:

   InAppWebViewSettings(
     disallowOverScroll: true,
     // ...
   )

   On Android this maps to WebView.setOverScrollMode(View.OVER_SCROLL_NEVER), which removes the stretch entirely. Adding overscroll-behavior: none to html, body in the skin CSS is not sufficient — the stretch is a native edge effect, not scroll chaining, so it has to be disabled on the WebView itself.

   If anyone on a Teclast or another Android 12+ device wants to verify before then, the quickest check is whether the stretch only occurs when dragging past the top or bottom of the skin — if so, this is definitively the cause.
3. tadelv

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   needs-triage

   on Oct 7, 2026
4. tadelv

   added this to the 0.9.2 milestone on Oct 7, 2026