Headertab Speed - 1.16 versus 1.17
Fragment of a discussion from Extension talk:Header Tabs
Headertabs in MM 1.17 onwards uses jQuery, and loading of the jQeury library is managed by MW's internal ResourceLoader. The issue with the bullet list has been discussed earlier on the SMW mailing list [1] and it seems for now there is no work around available that would allow a priority loading of the headertabs library. Any issues in regards with performance might be connected with the handling of the ResourceLoader library.