Can't leave EQ2 Dungeon Maker?

When designing a dungeon in EQ2's Dungeon Maker, the "Leave dungeon" on the Housing window might not work. Here's a workaround:

1. In the Dungeon Maker Toolbox, scroll down to Effects.
2. Double-click the “Dungeon Exit” item and place it.
3. Right-click the dungeon exit you placed and choose “Leave” from the context menu.

Thanks to Afista for this solution.