I almost never had to sign in to my email on this browser until fairly recently. Probably something was updated and changed settings. Is there something i can do to automatically sign me in to my(gmail) email when i open the browser and click on the link? There is no “remember me” box to check when i sign in and i have not found anything in my quick searching around.
What version number of ASB?
ASB does auto-update periodically for security purposes, maybe you should go into Settings to see what changed.
Version 71.0.1037.99. I could go to sEttings and look but i would not know what changes unless i had previously visited and kept notes!
I will however look at the settings and see what i can change.
Here you go: 
Use your mouse to:
Click 3 Dots Upper Right>Settings>(scroll down) Click Advanced. Clicking Advanced will expand the current window, set the first option to OFF, default is ON. Close your browser to set the new setting in place.
Likely what happened is your version of ASB automatically updated to the latest version 71.0.1037.99. When that happened some settings were set back to default.
[EDIT:] Sorry to say, but I do not auto-sign in so you may see the setting set to OFF instead…Turn ON…