XF 2.2 Second navi, lower_char username

[Robert9]

I have set

/members/{$xf.visitor.username}.{$xf.visitor.user_id}/#showViewers

as a link for one item of the second navi.

Now it seems, that on my ipad it makes a difference if i call

/members/Admin.1/#showViewers or
/members/admin.1/#showViewers

The first link jumps to profile messages, the second jumps to #showViewers, thats made by an addon.

Anyway i have the same problem with

/members/Admin.1/#about or
/members/admin.1/#about

how can i use {$xf.visitor.username} with lowercase_firstchar?

 

[Robert9]

Finally it doesnt matter, what we write bevore the user_id, right?
We can call

/members/this_is_a_rocksong.1/#showViewers
and should end at
/members/admin.1/#showViewers

but on my ipad this doesnt happen. I need the correct link to find the #rightPanel