Learn English – a word for when you enjoy something, but wish you didn’t. Or you don’t want to enjoy something but you end up finding it funny anyway

I have used or heard almost all of those words used in the context of tip of the tongue name replacement.

The three I've not heard in that context are gubbins, which I have heard as a reference to a person, much the same as muggins:

And who do you think will have to clear up this mess? Gubbins, here.

hickey, which I've only heard with respect to love bites, and I've not heard dojigger at all.

One that I think is missing from that list is hoojamaflip.

I think the most used would be whatsit and thingamabob. Another alternative is just plain thing.

In psychology, it is called doorway effect or location updating effect.

Researchers already know that walking from one space to another makes people more likely to forget tasks when compared to others who don’t make such a transition. Called “location-updating effect” the phenomenon also causes people transitioning between rooms (even virtual ones) to take more time while attempting to recall items from memory.

news.discovery.com

It happens both in virtual and real environments; and it is explained that leaving a place and entering a new one is served as an event boundary in the mind and memory refreshes itself for the new information.

This “doorway effect” appears to be quite general. It doesn't seem to matter, for instance, whether the virtual environments are displayed on a 66” flat screen or a 17” CRT. In one study, Radvansky and his colleagues tested the doorway effect in real rooms in their lab. Participants traversed a real-world environment, carrying physical objects and setting them down on actual tables. The objects were carried in shoeboxes to keep participants from peeking during the quizzes, but otherwise the procedure was more or less the same as in virtual reality. Sure enough, the doorway effect revealed itself: Memory was worse after passing through a doorway than after walking the same distance within a single room.

scientificamerican.com