I was trying to organize my bookmarks, so I made a bookmark folder. Then, I held down the Ctrl button and clicked all of the bookmarks that I wanted to put into that folder. When I dragged them to the folder and let go of the mouse button, some of them were left behind. I dragged the bookmarks until all of them were in the folder, but when I checked the folder, some of the bookmarks in between the ones I selected were in there, too. I clicked the undo button a few times with some bookmarks going back and some disappearing until the Bookmark Editor crashed.

Reproducible: Didn't try

Steps to Reproduce:
1. Edit bookmarks.
2. Click "New Folder"
3. Select several bookmarks that aren't necessarily next to each other.
4. Drag to new folder.
Actual Results:  
Some are left behind, and some that were supposed to be skipped go in there.

Expected Results:  
all selected and only selected bookmarks should go without any lose of bookmarks if clicking undo