Scroll bar issues

Bit of a weird one for you guys today

Am having an issue with PowerRail Track SS2 and SS4 after getting my machine rebuit in the last month.
Everything has reinstalled fine, and I have all my user preferences set up just the way I woud like. My only issue is with nearly every dialogue box, in that they are always too big for the window they are in and require a horizontal scroll bar when they did not have it before.

Have a look at the attached images. Both these tools do not need this scroll bar. In my previous install these were not present. In both cases the scroll distance is very small - only scrolling over a columns width. I have tried moving the column widths, but they are all reset when I dismiss and go back to using the tool

Its a bit frustating to be honest, not only is it different than previous (which is a bit of the grumpy old man in me), but it means that I might miss a part of dialogue due to the not realising this scroll bar is present.

Can anyone within Bentley suggest why this is the case. Wouldnt it be easier to make the window the size required for all the content as opposed to having a scroll bar for such a small amount of scrollable data. Is this something to do with the Windows themes in use on my machine? Would really appreciate any help - its doing my head in.

Thanks

A