Minecraft 15w36c, Minecraft 15w36d, Minecraft 15w37a, Minecraft 15w38a
OS X 10.10.5
Regular (non-native) launcher
java version "1.8.0_40"
Java(TM) SE Runtime Environment (build 1.8.0_40-b27)
Java HotSpot(TM) 64-Bit Server VM (build 25.40-b25, mixed mode)
The Minecraft client will sometimes hang when connecting to a server after having just disconnected from it.
It just shows the dirt background, nothing else, and does not react to ⌘Q or F3 C — only a force quit works.
It is also inconsistent: sometimes reconnecting works fine.