Besides the polymorphic problem, when a drawer has a void upgrade and is full, LP does not try to place items inside the drawer.

Maybe it is seeing the drawer with zero space available which should be an exception when a void upgrade is installed...

Same issue :/

If the drawers / controller could advertise themselves as still having space when they are full and have a void upgrade, then pipe systems would see them as a valid destination, and route the items to it, which would be a very nice feature.

I submitted a pull request to Logistics Pipes that was just Merged into it's dev branch. This issue was what it was adding functionality for. (RS485/LogisticsPipes#833)

So this little interaction issue should be fixed in the latest Dev version. Try it out and tell me if it hasn't!

The implementation / fix for this issue is now in the branch that everyone downloads from curse.

With over 26,000 downloads since that patch, I think it's safe to say that it is stable and implemented. 😄

Thanks @1n5aN1aC for improving the LP compatibility on both projects.

LP is something that's difficult for me to look at because it's not a mod I normally play with and I don't understand how to put interesting systems together.