Strange scrollbar behaviour on Windows (OSX is fine)

[William de Smet]

Hi there,
I got several groups with images and sliders in it.
The sliders have all different names and so do the groups.
I am using Rev 2.7.4 on OSX

I got this strange thing after making a standalone: the slider scrollbar
doesn't work right on/doesn't show right Windows but perfectly on OSX.
When I just put in a slider (with no code) it shows on Windows and you can
slide it.
Am I overseeing anything?
Anyone any idea?

Thanks!

Greetings,

William