Cover Display Issue

I'm getting an issue when adding covers where the cover appears as a small thumbnail in the upper left and the rest of the square is black.

I've tried with multiple items with the same result.

I've tried dragging/dropping, importing and right-clicking and adding the file all with the same result.

I don't remember what version I had previously, but I just updated to v2.72 when this issue manifested.

Any ideas?


No.
Same version here. No such issue.

It is just a shoot into the dark:
look into the right click properties of the shown cover image ...
and try out the option "Correct aspect ratio".

DD.20151017.1216.CEST

Could you elaborate a little more?
Which OS?
What kind of file?
Portable installation or local one?
What kind of device? Mobile phone/mobile network or landline?
Does the preview for such files work for other programs?