Attempted to sleep in a bed (which I've used before in this world.) Sleep didn't end at dawn and I noticed the Leave Bed button didn't work. Soon realized it was because the chat had opened. Time continued to pass in world. Pressing Esc key didn't exit chat and didn't open the options screen. Since cheats were not enabled, didn't have access to other commands to exit. Also tried pressing/holding F3 and C to force a crash, but no effect. Had to force close Minecraft.

About this world/playthrough: Started this on the first 1.10 snapshot and didn't have problems until the official release of 1.10 today. Haven't experience this problem before.

Steps to Reproduce:

1. Place bed
2. Sleep

Since I've done these steps before in this world and was using a previously-used bed, this may be a rare issue or other factors might be involved. I compared this to similar closed issues MC-100520 and MC-99856 and noticed some discussion about other objects possibly interfering with sleep. There is a "desk" (series of upside-down stairs) one block away from the bed to the left and a chest adjacent to the foot of the bed, which I hadn't placed the previous time I used the bed. Also, the dog followed me upstairs this time, when usually I make the dog sit before going to another floor of the house. It's possible the closeness of one or more of these may be necessary to trigger the glitch.