Stretched Thumbnails

Will the thumbnails in the image galleries ever be changed so that they aren't stretched?

Having stretched images without the correct aspect ratio makes it very hard to interpret the content of the image. This bug has been existent for a very long time with no changes made.

Ideally, the thumbnails would have the correct aspect ratio and either: the images have different widths, or a padding is added around them.

An example of the problem from a recent post: