No, it is when you flick the indicator stalk without moving it far enough to turn the indicators on. You just move it until you feel resistance and then let it return to the off position.
My van had that and I found it a pain in the tonsils. I always cancel my indicators after using them, not waiting on the self cancelling to cancel or otherwise. With the van I kept finding it signalling in the other direction when I didn't want to. Didn't realise it was meant to do that! Must be heavy handed.
Does it flash fast when you do that? I have signalled to overtaking lorries that they are far enough past me to pull in, and I sometimes get three rapid flashes each side.