Touch keyboard does not show when text input is focused using touchscreen

[adamfierek]

Describe the bug

Touch keyboard does not show when text input is focused using touchscreen. Observed on Windows 10 1809 build 17763.5329.

It only shows when manually invoke ITipInvocation.Toggle()

App was migrated from 1.5 where everything was working properly.

Steps to reproduce the bug

1. Run WinUI app (WASDK 1.6.5) on Windows 10 1809 17763.5329
2. Touch TextBox using touch screen

Expected behavior

Touch keyboard should be showed every time when text input is focused as on WASDK 1.5.

Screenshots

No response

NuGet package version

None

Packaging type

Unpackaged

Windows version

Windows 10 version 1809 (17763, October 2018 Update)

IDE

Visual Studio 2022

Additional context

No response

[adamfierek]

On other versions of Win 10 and 11 it does not works too. Also, if I keep the obj directory and build app on 1.5 (after downgrade) it still not works. After clear obj, on 1.5 it runs as expected