UserAgent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.2988.0 Safari/537.36

Steps to reproduce the problem:
1. sommetimes after leaving chrome open and leaving the Laptop in standby.
I keep the laptop to the power adapter and connected to the Internet

What is the expected behavior?
chrome keeps open.

What went wrong?
Google Chrome clossed and the Informations transfeared to Chronium without opening Chromium.

Did this work before? N/A 

Chrome version: 58.0.2988.0  Channel: n/a
OS Version: 10.0
Flash Version: 

Did this work before? mostly its the Second time

first time after hollidays while the laptop was in Standby
second time after the night passed (used it last evening and this morning).

Never heard of chromium before

Laptop informations: 
made by Acer
Name LAPTPOP-T460O6VA
Prossesor: Intel(R) Core(TM) i7-6500U CPU @ 2.50Hz 2.60Hz
64 bit operating system and based procesoor
15.9 GB of 16.0GB Ram usable

Windows edition Windows 10 Home