Search menu and notifications area inactive on iPad

Hello,

I discovered that you added Vanilla category in your forum, so I repost here. It's probably clearer for you.

I tried this Vanilla demo on my iPad 3 (old iPad).
The main menu works, links are clickable.

On the other hand the menu just below is totally inactive (area with the search bar, notifications and profile).
No items in this area are clickable.

Please see capture in attachment.

Thank you
Philippe