I have had this happen 2 or 3 times now. I have put some of the files back in and they stay so they are not considered safe. As I use clean PC mode this is not very safe. I think one time it happened when I temporarily disabled defence plus but it may have been a coincidence and I could not reproduce it.
Windows 7 64 bit with CIS 4.0.141842.828. AV, firewall and defence+ all active. Defence+ in clean PC mode.
the pending files is useless it takes forever for a file to be found safe it gets cleared randomly when you try to use it and if a file is found to be “maleware” kiss that file goodbye even if you say no to remove it when you know its a fp