Ah… this just happened to me. I was transferring samples and deleting them and going about my usual business when the incoming folder got corrupted somehow.
Might have deleted a sample that was still having it’s progress bar, not really sure. Or like, deleted a sample directly after it was transferred.
Only way to get out of the incoming folder is to restart the AR and then not go into the incoming folder. Pressing No/Reload takes me out of the samples menu but going back in without restarting my AR I end up directly in the incoming folder.