When I upload a product image, the theme creates a couple of thumbnails.
To my surprise, thumbnails created from a vertical image are not displayed at their real size on the frontend.
Please take a look at the thumbnails displayed on page http://www.wp.fotowalther.ch/?product_cat=display-mismatch
The thumbnail 1191 sitting in the Media Library is 284x188 px - the thumbnail you see is correctly displayed at 284x188 px.
The thumbnail 1196 sitting in the Media Library is 126x190 px - however, the thumbnail you see is displayed at 282x428 px.
The thumbnail 1214 originally was 126x190 px, it was replaced (within Photoshop) by a thumbnail sized 188x284 px to fool the theme - however, the thumbnail you see is 282x428 px.
The thumbnails 1196 and 1214 are both displayed at the same size, although they reflect thumbnails of ]b]different]/b] size.
The thumbnails 1191 and 1214 are both displayed at different size, although they reflect thumbnails of the [/b]same size.
In other words:
A horizontal thumbnail of 284x188 px is correctly displayed.
A vertical thumbnail of the same size however is displayed at a much bigger size (282x428 px instead of 188x284 px).
Neither a thumbnail of 126x190 px, nor a thumbnail of 188x284 px is correctly displayed.
I noticed this mismatch only with [b]vertical images (width smaller than height).
There are not extreme sizes nor an extreme aspect ratio that would need any sort of adjustment in order to be displayed.
I checked the page on a different computer with different OS and different monitor - the mismatch is the same.
What makes the vertical thumbnails displayed incorrectly?
How could this be remedied?