A forum I manage was recently updated to
2.7.0.beta1, which caused both the top bar and side slider to not move when scrolling.
Even when scrolling up on a long topic, the top bar does not appear.
This image demonstrates how the slide bar is staying at the top of the topic:
This is happening to every user on the forum.
I don’t believe this is a theme/component CSS issue because it just started happening after the update.