Cancel tool cancels dig when build is checked (if dig is behind building plan)

So I was trying to start a dig on a new playthrough and I messed up my ladder when I placed them on top of the dig point. So i selected the cancel tool and tied to clear just the misplaced stairs, but the dig point behind the stairs also got cleared.



What I think is happening is when you place a build plan, if there is a dig point behind it it's getting replaced by the build plan (since building will clear that section out anyways) so when you clear said build plan even though there was a dig point behind it originally the dig point actually isn't there anymore? What should happen is if that's how it's working it should retoggle the dig sprite after clearing a misplaced build plan.

Edit: After testing my theory above, I used the clear tool while only having the building ticked for clearing and i selected the complete dig area with my ladders and the ladders did get removed and the original dig point is definitely gone.