Rendering issues for imported video in latest version (Windows)

Hi guys! Just upgraded to 3.7 today and now when I import a video (for piano hand purposes) it's pretty hoarked:

Snapshot of original video:

In SeeMusic now looks like this:

Known regression? The raw source file (mp4) worked great a week ago and I was able to get the full 88 keys and crop etc. to line up a pretty good rendition. This is on Windows 10 latest. Let me know, many thanks! Outstanding program overall when I had it working last week. :)