The axis of the image does not fit
This is not a bug, but a misalignment. It is an error in dataset imaging, and we have to play around them.
Unfortunately it cannot be corrected, so do your best for these kinds of cubes. They are tricky and you can always ask for help in chat.
Ah, sometimes it is a bug. Occasionally, due to a loading error, the 2d and 3d will be completely mismatched. Unfortunately the only way i've found to fix it is to refresh the page, which results in the loss of the cube.