Minecraft 1.12 Pre-Release 5

Howdy there,

Not sure if it is a bug of the pre5 in 1.12, but already had two times the following issue (computer system is windows 10). The first time happened yesterday and the second time today :

While playing, the computer closes itself at once, without preventing. It is like someone took off the plug of the computer. In previous minecraft versions, it never happened. I am wondering if it is coming from minecraft or maybe from the two latests update of windows.