I had portals to two different dimensions near each other in the overworld, and when I came out of one dimension, I was standing in the other dimension's portal.

Cool mod! I'm using it for reference for my own mod that will have to create dimensions on the fly.

i gotta say i never even considered implementing a feature like this before your report so thank you :D

Thanks for the report! This has been fixed for the next version of Infinite Dimensions.

Badass.