Plumber will put icons for Bountiful Delves and Special Assignments on the World Map, it seems by using the BlizzardUI map pins.

When using Plumber in combination with Map Pin Enhanced, on every reload, these will be tracked as map pins. Since MPE allows unlimited map pins, it will save and track all of them.

Toggling the option off and on during a session does not reactivate the map pins.

Is it possible to actually clear the map pins for every delve/assignment marked?

Hi!
Its dev has reached out to me. Updating Plumber to the latest version should fix it.

Fix seems to be working, thank you!

Sorry, I think it's still happening the very first time you get the Special Assignment on your map? But no longer every time you relog/reload.

Doesn't seem to be fixed, current Special Assignment in Ringing Deeps gets pinned every time I open that zone map.

I'm back again; issue has returned with the new patch, at least with the Special Assignment icons. If you could take another look?

Hi! It should have been fixed in v1.6.4.

I tried a fresh install of MPE and Plumber, didn't work.
Figured I'd turn off my other 117 addons and test out which one the culprit was.

Luckily I guessed right on the first go: it's World Quest Tracker. Can't see a relevant option in their settings but I will contact them.
Sorry for the false report.

I've removed anything that can automatically set waypoints, and our pins only appear on Khaz Algar continent map.
I just downloaded Map Pin Enhanced and encountered no issue. Perhaps check your Map Pin Enhanced settings?

I'm glad to know it works, otherwise I'm gonna start questioning myself :)