XF 1.2 Sidebar is always showing up a bit later than the rest. Why?

[Marcus]

Why is the sidebar always showing up a bit later than the rest of the page?

How could I tell my browser to display the sidebar along with the rest of the page immediately?

 

[Amaury]

Does this happen on the default style?

 

[Jeremy]

You most likely have some sort of JavaScript interacting with the sidebar. Without seeing the actual site, there isn't much advice we can give.