I could not get out of bed/weak up

I could not get out of bed/weak up

What I expected to happen was...:
I should weak up because it was night and I wanted to sleep

What actually happened was...:
I could not weak up/exit the bed.

Steps to Reproduce:
1. I right clicked on the bed
2. Then I was in bed, i minimized Minecraft and open my browser
3. After 30 secs I get in minecraft again, but I was still in bed and I could not exit the bed