I've been having the same issue since day one of the early access, and it was still happening after last night's most recent hotfix. It occurs every time I exit the game from a world log-in, but not when I get booted before logging into characters(from that occasional lobby search error since 3.0). If it matters any, I'm on Win7 64-bit with an i7 3770, using DX11, 16GB RAM, and a GeForce GTX 960 GPU.