I recently bought LR5 and then upgraded it to V5.7 via a web download from Adobe. I'm running Windows 8 and what I have recently found is that LR while I'm working on a RAW file will continually and without any input from me, change the orientation of the image from landscape to portrait or even upside down and this happens time and time again while I'm working. As you can imagine this is annoying, has anyone else experienced this and if so is there a cure for it?
If it's relevant I'm using a Nikon D7000 camera for all my photography.
I have a D7000 and Lightroom 5.7 and Lightroom 6 and I do not have this problem.
Please try deleting your preference file and see if that fixes the problem. Preference and other file locations in Lightroom 5