Bug with Crop: Source

[DRM]

@shotcut

I fixed it for the next version 20.06.

I tested the fix. When trying to crop the right side the image is now being affected in a strange way:

The image I used in my demo is the same one I linked to in my bug thread for #19:

Bug Report v19.10.20

19) I tried applying the Crop: Source filter with an image that has a resolution of 975x808 and Shotcut crashed. Here’s an image with that same resolution to test out. 20) There is an issue with certain kinds of images when working with the Fit mode in Size and Position and using Preview Scaling. The size keeps changing in all Preview Scaling modes. Here is a demo. And here is the image I was using in that demo to test out: 21) Creating transition clips by stretching one clip onto another wil…