Cross reference: Firefox misbehaviours in response to drag-and-drop - Firefox Development - Mozilla Discourse

Firefox 56.0.1 (64-bit) in safe mode on FreeBSD-CURRENT, Dolphin, KDE Plasma 5, KWin.

Dropped: ten different files. Firefox produced ten tabs for just one of the files.

Can anyone reproduce that, or other misbehaviours, with drag and drop from (for example) Dolphin?

(Anyone; including users of Linux.)

No response from the Firefox Development area; maybe someone here can test. Thanks.