|Speaking for me only, it doesn't matter which folder so system My Documents will do it too and not uniquely there only. Win98 out of the box did it too. Not necessarily deleting files, but the process of highlighting several in a block to either cut and paste them elsewhere or copy and paste them elsewhere too. Once the block of files is highlighted, one goes to right click the highlighted file block to select the operation and before you get the menu to select the desired operation from, the screen blinks and you are now at the bottom of the listing looking at a same sized highlighted block all prefixed with 'copy of' same file names and this grows to 'copy (1) of' if you can't get on top of the built in feature of Windows Explorer quick enough to not have preexisting 'copy of's in that same folder already. Similar in method to New Folder (11) if you already have 10 other New Folders with all of them default numbered too.|
Can't get to it if I ever did want to use this feature either. It only happens by mistake here. To be fair it might be a 'feature' of Tweak UI itself, I can't recall the exact order of installation and the occurrence of 'copy of' issues. TweakUI does have the Copy To, and Move To toy just as a reminder -- have no idea if it's involved or not, I don't use it.