Touchscreen select vs drag

[cbrake]

We are running the a Kiosk browser based on QtWebengine on several platforms. App source:

https://github.com/YoeDistro/yoe-kiosk-browser

On a platform with a resistive touchscreen using tslib, when I touch and drag to scroll the screen, the browser selects text instead of dragging the screen. More details on this platform:

https://community.tmpdir.org/t/odroid-c4-notes/924/10

On other platforms with a cap touchscreen, this same application works OK:

https://community.tmpdir.org/t/yoe-kiosk-browser-running-on-qt-6-6/1173

Does anyone know how I can change the behavior on the resistive touch screen platform to click and drag instead of select?