I've epxerienced the same thing at GLA and EDI.
Last July on an FCA flight from Bourgas, we arrived at about 2:30am, and were the only flight in at that time. We had to wait about 15/20 minutes for the airbridge to come meet us. We also had a to wait a long time for luggage.
The same thing happened at EDI a few weeks ago (23rd December). I arrived from LTN on EZY and we waited for about 10 minutes for the Airbridge, but then another 30 minutes+ for luggage!