Transparent images leave traces in the zoom area

[FilipDominec]

The zoom area is useful, but it should not take into account image transparency. Otherwise, it can be hard to locate axes:

[pn2200]

Thanks for the report. Can you attach an image here that suffers this problem? Thanks.

[FilipDominec]

Sure. My version of g3data is 1.5.2 (in Ubuntu 20.04).