Open Session dialogue box (i.e. Windows File Explorer) scrolling issue

[Fuzzyc]

Whenever I do something that requires a windows file dialogue box to be opened, such as "file/open session", "file/save as", etc, the scroll bar will not function correctly. If there are more files than what appears in the window, I cannot scroll down to see the other files. I try to scroll down by grabbing the scroll bar but as soon as I let go of the mouse it scrolls right back up to the top. The only way to open a file or folder that is not visible in the window is to type in the name.

I haven't seen this behavior in any other apps excepts Pro Tools. I'm running PT 12.7.1.733. I've trashed my preferences but no change. Has anyone else experienced this? If so, how did you fix it?

Thanks!