Hide entity tab on iPad

Hello,

i need to display/hide tabs in condition to field values. In the crm desktop version, there's no problem with hiding tabs. For example, i added a tab "Protect Details" with the SQL condition proj_performance_line like '%Protect%'. In result to this, the tab "Protect Details" is visible, if my record has the value "Protect" in "proj_performance_line".

In the attatched screenshot you can see, that there is no "Performance Line" with the value "Protect", but the tab "Protect Test" is visible. Even the SQL condition "1=2" doesn't hide a tab.

Any idea how to get this working on the mobile crm version (iPad)?