SUMMARY Suppose you have disk A with 10GB space and a folder with 6GB of files on some other disk. Copying the folder to disk A the first time works just fine. Copying the folder to disk A again fails, even if the user would have selected "skip" for duplicate files. In other words, the bug is that the destination size is checked before the prompt for "skip duplicate files" is presented. This toy example doesn't matter much, but it does matter for merging large folders onto a single drive. E.g. 1TB drive, with 600GB folders on 3 separate drives with 90% duplicate files. It would be nice to use Dolphin's GUI rather than the terminal for merging those folders on the 1TB drive.
*** This bug has been marked as a duplicate of bug 491210 ***