In watchOS 3 Activity app, current hour marker (light blue vertical bar) used to blink until it was lit permanently (if the 1 min activity goal was reached). It was easy to see at a glance if I needed to "close" the current hour - rightmost marker was either lit or blinking.
watchOS 4 beta removed the blinking and it's tricky to find out whether the last lit marker is for the current or previous hour - there are lines and numbers on the scale but they are too tiny. I'd like to have the blinking marker back!