QSlider resize problem only on Mac.

[Tony123]

In QDesigner I put a horizontal slider on a Dialog and set vertical layout. The problem happens if I resize the dialog, the QSlider resize/refresh to some length and then just stop resizing (not exactly it's just not refreshed). It worth mentioning that this happens only on Mac for me Windows work correctly.

No code required it could be easily replicated in QDesigner.

System:
MacOS: Catalina 10.15.7
Qt: 5.12.3

Can you provide a solution? Thx

[VRonin]

Is the above gif running in the designer preview window or the final program?

[Tony123]

@VRonin it's a compiled program.

[VRonin]

Looks like this bug that was solved in 5.12.5