User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7) Gecko/20040626 Firefox/0.9.1 Build Identifier: version 0.7.1 (20040626) When dragging a message from one folder to another, clicking the right mouse button should cancel the drag, but instead it's equivalent to releasing the left mouse button to complete the drag. Similar in description to bug 177006 for Firefox. Reproducible: Always Steps to Reproduce: 1. Drag message using left mouse button to different folder 2. Right click when message is over folder 3. Actual Results: Message is transferred to new folder. Expected Results: Canceled the drag request.
It seems all the TB drag actions behave this way: dragging a message or a folder, or dragging buttons during toolbar customization. Reproduced with TB 1.0, Win2K, but it wouldn't surprise me if this happens everywhere. Also dragging text during composition, but that's a Core:Editor bug.
Seems like a generic drag-drop behaviour/bug, in the XUL toolkit. Besides this bug, that would solve bug 177006 and bug 253890 also
*** Bug 253890 has been marked as a duplicate of this bug. ***
*** Bug 255870 has been marked as a duplicate of this bug. ***
*** Bug 325753 has been marked as a duplicate of this bug. ***