Cannot Reproduce Sticky header in Flat Awesome 2 not so sticky

[WoodiE]

A couple of my users have reported that the sticky header in Flat Awesome isn't so sticky. When they start to scroll down the menu goes away. When they scroll back up it reappears.

I can't replicate it on my phone running Android and using Chrome browser but others on iPhones and Android both have reported it. Is this a known bug?

 

[Russ]

We're not modifying the sticky header at all, those are standard XF2 options. May need specific devices + browser to try to troubleshoot.