Gamebreaking - Farm Gold In Dungeons Endlessly (Patreon)

(This exploit is in DEVELOPMENTAL stage: which means it is proven to work but may require fine-tunning and optimization.)

Youtube viewer @natsukisubaru5881 just told me about this amazing glitch he discovered which can allow you to run dungeons endlessly.

For the benefit of the many new patreons which joined recently: running warcraft dungeons can give you a lot of raw and other items which can be sold to vendors for raw gold. To stop this being too profitable Blizzard limit dungeon runs to 10 per hour: which greatly reduces the amount of gold you can make.

If we can find a way around this it would be like the Holy Grail of gold farming.

The method @natsukisubaru5881 contributed works like this:

I don't know if it's a bug but when you've already done it 10 times and it won't let you in you can enter with another character from another realm and then go back to your Main and you can do it all over again making it practically infinite.

When I tried this the first few times it did not work. This seems to be because I was doing it too fast. The following steps seem to work consistently (some may be unnecessary):

1. Hit instance lockout on your main running a specific dungeon.(I used the Motherlode)

2. Log out, and close your client.

3. Log in on another character on another realm and enter the same dungeon. You can leave immediately you enter. Once outside reset the instance.

4. Log out, and close your client again.

5. Wait at least two minutes.

6. Log-in on your main and re-enter the dungeon you've been locked out of. You should be able to enter and your instance lockout total should have been reset to 0 (ie you can run the dungeon ten times again).

EDIT: turns out realm switch is not necessary (credit: Botjesus in comment below).