Exported PNG/JPG shows all black

[mandarvaze]

First of all, I want to thank you for such a wonderful program.

See https://pixey.org/p/mandarvaze/512542286449385052 This looks OK because I have used purple color for the text. So it looks OK in either black background or white

On the other hand : https://pixey.org/p/mandarvaze/508073589008507776 looks all black in full view mode. It looks OK on the profile page in a thumbnail view. This is a face of a man.

I tried this in Chromium, MS Edge and Firefox (all on macOS)

This may be because there is no background.