Playbar missing in mobile view

Hello there,

I´m wondering why my content does not show the playbar in mobile portrait mode, but in mobile landscape mode?

I´m using Captivate 2017, but working with an "old" file made in Captivate 9. So I do not use fluid boxes, but breakpoints. The script assumes that all major buttons wil be shown on a mobile device:

cp.responsiveButtons =

{

    //"ButtonName"    :     [Primary,Tablet,Mobile],

    "Rewind"        :     [true,true,false],

    "Backward"        :     [true,true,true],

    "Play"            :     [true,true,true],

    "Slider"        :     [true,true,false],

    "Forward"        :     [true,true,true],

    "CC"            :     [true,true,true],

    "AudioOn"        :     [true,true,true],

    "Exit"            :     [true,true,true],

    "FastForward"    :     [true,true,false],

    "TOC"            :     [true,true,true]

I´ve used the standard cpMobile Playbar, set some new colors and changed the png´s to get the customers CI look & feel - nothing else!

This is how it looks:

• in tablet portrait mode
  
• in smartphone portrait mode:
  

Playbar settings are the same in both views/modes, height is the same and buttons to show also. So why do the buttons dissapear when viewed with a smartphoen (or previewed in smartphone mode)?