Windscreen wipers wipe when turning ignition on or off

[euro_z]

We bought a 2005 Disco 3 HSE a few days ago and have noticed the front and rear wipers wiping once when we stop the engine and turn the key to the off position to remove it.
The problem is a bit inconsistent, if we turn the ignition off very slowly sometimes the wipers wont wipe, but then the next time we go to start the car it will wipe as soon as the engine starts. Seems to transfer the problem to the next key turn somehow..?

Starting to get annoying, thought it might be the auto wipers but we have made sure the wipers are in the off position.

Any ideas what would cause this?
Cheers

[jonesy63]

Hi - welcome!

What position is the wiper switch in when this happens? (In auto mode?)

Does the rear wiper come on when you select reverse gear?