Weird Slider in Darkmode

Running Mojave in DarkMode I have noticed that the Slider is not correctly displayed if the window is resized in the Open event. The slider circle is shown but not the path / line.
To reproduce just place a slider in a window and input some new window height at the Open event.
It works fine if size is changed in Activate event or later but not at the Open event.

I always used Open to set the new window size as Activate may fire also later and I would need to control if it’s first time.

I think there is a Feedback Case related to this.

Try to put a Me.Invalidate (or it is Self.Invalidate?) at the end of the Open event.

Thanks Alberto.

Invalidate doesn’t seems to help and I haven’t found any case for this issue but there is a similar for a default button.

Tried to found a workaround but I can’t (testing Mojave in VM).

This is easy to reproduce, so you may want to file a FC and include a sample.

Case opened: