Dynamic Pannel Banner works on Mobile but not on Desktop

Hello all,
I have built a mobile prototype that displays a banner (implemented by Dynamic Panel). From there a CTA can be clicked and one should see content that extends over the entire smartphone viewport (change to State 2).
Unfortunately my prototype works on most mobile browsers (sometimes problems with Firefox & Edge), but not on desktop browsers.
I also don’t understand why I have to manually resize the dynamic panel when switching states (if you only check “Fit to Content”, the banner is not displayed in full size when switching).
Could you help me? Attached the link and also the file (created in Axure RP 10):

Works_on_Mobile_but_not_Desktop.rp (57.1 KB)


Thank you!!