fast/events/drag-and-drop-dataTransfer-types-nocrash.html fast/events/drag-and-drop-none.html fast/events/drag-and-drop.html fast/events/drag-parent-node.html The only common thing between them seems to be messages about event.dataTransfer{.dropEffect} in the failure messages.
Also failing, test case /fast/events/drag-and-drop-fire-drag-dragover.html This might be related to this bug.
And http/tests/misc/bubble-drag-events.html
I'm pretty sure this is also the problem for: fast/dom/Window/window-postmessage-clone.html
new one: editing/pasteboard/drop-inputtext-acquires-style.html Skipped by http://trac.webkit.org/changeset/54379
Closing this bug as a duplicate of the GTK+ drag-and-drop ultra-metabug. *** This bug has been marked as a duplicate of bug 30623 ***