Interesting... that sample image bugs out on 2.3.7 but not 2.3.6 as noted.
But, I can't get this to repeat with other test images with a similar orientation change or instruction in set in the exif data.
./src/XF/Http/Request.php
This file was changed as noted in the screenshot below.
Left: 2.3.6
Right: 2.3.7
A dirty test by replacing the new 2.3.7 file with the original 2.3.6 version showed that the orientation on that sample image provided worked as people expected.
Not a developer, so move at your own risk. @Chris D or @Jeremy P would need to confirm the background here.
Ok so i'll have to look out for that.
At the moment we've had no issues.
I'm going to pinch that link you gave @Paul B and post it on my forum just in case my members are having issues.