Cropping round image also adds a black border to boundary.

[yahyaerturan]

Expected Behavior

When cropping round image, only cropped image should be saved.

Actual Behavior

When cropping round image, a black border boundary also being saved.

Steps to Reproduce the Problem

1. Upon to selecting file, open a BS5 modal to crop image.
2. Instantiate with enforce boundary true.
3. Get cropped image as base64.