Multi Offset Glitches

I’ve been using multi-offset a lot on my current project, and about 1/4 times I run the command, it does some weird stuff at external corners. Here’s a snip:


Does anyone know why this would be happening? I can’t seem to find a common denominator between the cases that it happens.

Maybe that the line is overlapping within itself and needs to be trimmed.

I thought so too, but I’ve gone through the lines and they all segmented properly with no overlaps