An email arrives alerting me to action on a thread I'm on/watching. I click on the link to the thread.
In the past : the thread would open in a new window and the system would automatically scroll down to the newest activity.
For the past couple of days : the thread opens OK, but I have to scroll down manually 
. Clearly no biggie, but you miss a nice function when it's gone!
(Laptop, Chrome, Windows 10 if that's relevant)