Logging out of Chrome session

Recently I am having the issue that I get (randomly) logged out of my Chrome 1PW session. Afterwards, it has my account name (probably in a cookie) but it requires me to reauthenticate with the master password, secret key (and in my case also 2FA). Any idea what could be causing this? To my best knowledge I am not doing something odd or wrong and the behavior is quite distrupting. 

Please let me know how I can contribute to find the root cause. I have this issue twice in two weeks time whereas before this worked perfectly. 

Love the 1PW product. :-)

Best, Mark