I'm having a problem with the R&D facility. Every time I unlock a new node, it doesn't show the node as unlocked, yet my science count decreases as it should. Then, when I exit and go back in, the node is unlocked and the next one is available. After some sleuthing, I determined that the cause is either the Interstellar tech tree or TreeLoader, which is required for the former to work. The issue is persistent across multiple saves on separate KSP installations. I'm using 32-bit. It's not game-breaking, but it's annoying to have to go in and out of R&D to unlock several nodes after gaining large amounts of science from missions. Any suggestions?

EDIT: /u/bandaged told me about TechManager, which is a viable alternative to TreeLoader that doesn't have the issue I described. Anyone having the same problem should download that instead.