I'm really confused about that one, I can only assume it's a bug because it only happens some of the time, but when I delete the rotated image and re-add it to a slot it's the right way round again.
Also, images still aren't inheriting translation coordinates when being added, either to a new slot or a current one. I want the images to line up, but I'm having to move each individual one manually, which is a huge pain because I have a lot of images. I used to be able to drag images in the right hand menu from the folder and onto another image in the slot to get it to copy that image's position, but an update some time ago changed this so it now replaces the image and there's no other workaround I can find. Don't know if it's a bug or not, but it's really frustrating! It's my biggest problem with this software, and I don't understand why it exists. Is it something I'm doing wrong??