Slider drag not working properly with touch on Surface Go 2

Dear all,

We have Surface Go 2 - model "1926" - "TABLET-LNIT5RM3" .

The screen resolution is 1920x1280 and it ships by default with "Scale 150%" (with text recommended on next to it).

When i was trying something i found out that basic Slider is not working. I double checked with Slider from QT Creator / Qt Quick Controls 2 - Gallery.

What works:

• when using with touch, settings scale=100%
• when using with (external/normal-usb) mouse - with scaling

What kind of works:

• when using with touch, scale=150, but dpiawareness=0 (but the app looks awfull, due scaling).

What does not work:

• when using with touch, scale=150, dpiawareness=2.

The issue seems to be that drag along the slider makes the slider handle to go "1.5x" speed or at least not-normal speed.