Thread:Project:Support desk/Different browser - different behavior?/reply (2)

I discovered this:


 * 1) Screenshot from mainpage with collapsed sidebar
 * 2) Screenshot from mainpage without collapsed sidebar

The difference in the HTML-Code for the part of the sidebar:
 * 1) With collapsed sidebar you find... ...
 * 2) Without collapsed sidebar you find... ...

Is the missing collapsible-nav the reason for the missing collapsibility? And in case of yes, why is it missing at all?