Description of problem: DND behavior is a bit weird in GTK3 Firefox. If some (=any) item is placed somewhere to the Firefox window it remains on that place until is Firefox closed. That item is visible even if Firefox's window is minimized. Version-Release number of selected component (if applicable): firefox-gtk3-30.0-2.fc21.x86_64 How reproducible: Always (may behave correctly on different systems/GPUs) Steps to Reproduce: 1.Drag some item from web page or tab 2.Put it anywhere where it shouldn't be put (no drop area) Actual results: Item remains on that place "forever". Expected results: Item should return to original place with some eye-candy animation. Additional info: May depend on the system, tested on: GPU: Intel GMA 3150 Driver: xorg-x11-drv-intel-2.21.15-13.fc21.x86_64 (SNA) DE: Gnome Shell 3.11.90 Firefox is HW accelerated with OpenGL 2.1.
Can you provide me some reproducer? A web page where you see that. I'm unable to reproduce it, the return animation works for me.
Created attachment 873901 [details] Screenshot It happens everywhere, For example, even if no page is opened (just 2 blank) and I drag one of them somewhere it stays there.
Moving upstream - https://bugzilla.mozilla.org/show_bug.cgi?id=983843