Happened to me too.
I think. I sometimes thought hey where is that method gone, couldn't remember I deleted it.

Am 13.12.2017 03:42 schrieb "Ben Coman" <btc@openinworld.com>:

I could just be having a brain freeze, but just sharing in case��
anyone else is similarly going mad...
a few times recently in Nautilus I've dragged a method from the fourth pane
and dropped it on a protocol in the third pane and the method disappeared
from the system.�� Luckily its easily recovered from Tools > Code Changes,
where it shows as deleted. But its weird that a delete could be triggered��
from the action I (thought I) performed.�� ��

I've yet to detect a pattern.�� Unfortunately its kind of blink-and-you-miss-it.
Its not until a second later when selecting the target protocol��
that the behaviour becomes apparent.��

This is in��60527-64,��Unix built on Jul 20 2017 20:40:36 Compiler: 4.6.3

cheers -ben