bar

Show a scroll progress bar. Also you can click on the bar to jump inside the page. The color automatically adapts to the theme. DEMO Screenshots:

Strictly speaking, this may not be a "bug" or it may be as designed, but it's just a bit awkward. (If this is better suited as a suggestion, then please move it accordingly.) I can only guess this is because the sub-navigation bar wasn't meant to have dropdowns, at least not in XenForo 1. When...