Not on my end. I still had the pink grid with KSP 1.4.1 and Kethane 0.9.11. After deleting the 2 the pink grid was gone for me and nodes show up normally.
Dunno if it's based on video cards or detection of the OS/KSP release so I don't have an answer. I can possibly recreate it and if there's a log to share, I can get it.