ACR will sometimes not allow me to advance to next img, only option is to cancel edits or force quit

This bug has happened to me multiple times on ACR 15.0. 

I open multiple photos to edit and then randomly I'll try to move onto the next image but the screen still displays the previous one. No matter which image I select from the side bar, the image on the screen is still the same photo it got stuck on. I can save that image as a JPG, I can save any of the previous images, or ones I have yet to edit (even though they don't display on the edit screen) and they show up in the folder they're saved to, however I can't click "Done" to save the settings on all of the images I have opened, I can't click  the "open" button which would also save the edits I had previously done and open the current photo in Photoshop. My only option is to click "Cancel" which for some reason actually works.  I get the prompt that pops up asking if I want to cancel all changes and dismiss camera raw when I click cancel, however neither the Done or Open buttons do anything when pressed. My only options are to cancel or force quit Photoshop, causing me to lose all of my RAW edits. 

Why is this happening and has anyone else had this issue?