[ZDOOM] Linedefs assigned to the wrong sector

[NaturalTvventy]

In my more complex rooms with weirdly-angled lines I find that ZDoom gets confused as to which sector lines belong to. 

 

 

My solution is to move vertices a single unit; the problem then goes away. Is this a nodebuilder issue? Is there a way to fix it without tweaking geometries?

[Gez]

Yeah, that looks like nodebuilding issues.

[Xaser]

@NaturalTvventy Are you building with ZDBSP, by chance? If not, give that a try -- of all the various nodebuilders, it does the best job at eliminating this sort of issue (and is basically the best choice in general if you're not making a vanilla map).