Placed Things in DB2 don't show up ingame

The Spectre shows up fine in the editor, even in visual mode, but doesn't spawn ingame (doesn't matter how GZDoom is loaded). It's set to appear on all difficulties, so it's not that. Have tried every other selectable Thing including the Spectre in every sector on the map, and none of them load.

Did you flag it as multiplayer?

...Okay, I swear it wasn't flagged as that before. I don't remember setting *anything* to MP only at any point.

Sorry for being a jackass, that was way too obvious x_x

Just a tip for future posts: if your pics are going to be that big, just post a link instead.