For some reason I thought that this would be the way to do it. But apparently you
can doubleclick-walk to everything in Thimbleweed Park.
So yeah, it seems to be an intentional bug which I'll fix right away

In the meantime you can comment out the 'if condition' in line 2075 and it's bracket in 2085. In line 2095 remove this piece from the if condition:
"&& location_type == eLocationNothing"
I'll test it some more and see if this fix breaks anything.
--edit: of course it broke something

Gotta fix the door handling now.