Bug in markings, not effecting image were the marker is.
When i put out some marker its not affecting the correct area if the image is cropped. Images below are the same spot marked out but one is with crop on and another with no crop. The marker stays in the same spot (images might be in different zoom) but the area affected by the marker changes. I have had this for some time and its still there in 2.0.4. It does not matter if its drawn, a circle or a "dot-by-dot", the effect it the same and not working.
Its rather easy to reproduce. Put a marking somewhere and make it an having an "extreme effect" so that the effect it clearly visible, zoom in and see that its affecting the correct spot. Crop the image and then zoom in on the same spot, its now not affecting the correct spot but the marker did not move.
How much and in what direction its wrong changes with the position of the marker, try moving it around and you will see this.
Sorry if i use the wrong words for this, i am using Swedish language of darktable.