System Information
Operating system: Linux-5.5.15-200.fc31.x86_64-x86_64-with-fedora-31-Thirty_One 64 Bits
Graphics card: Mesa DRI Intel(R) HD Graphics 620 (Kaby Lake GT2) Intel Open Source Technology Center 4.5 (Core Profile) Mesa 19.2.8

Blender Version
Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-04-15 14:32, hash: rBdebd8aab4a82

Short description of error
Inserting an image ( bigger than project resolution ), offsetting it ( for correct aspect ratio ) and using a transform strip for correct scaling crops the image.
The transform strip does not take into account the image outside of the project resolution.

Screenshot below:

Test file: