t3 off canvas toggle button disabled - by: arno

Hi,

I am trying to setup membership pro within my T3 template website but it creates a conflict with the off-canvas opening button.
The screenshot shows this:
top navigation bar (with home selected) shows different css from bottom navigation bar with a membership menu item component selected. The biggest problem is that the button doesn't open the off-screen canvas anymore. It only works again if the screen is small enough to show a navbar-collapser.

Does anyone here now what might be causing this? Is there something in membership pro I can turn off/delete /change to stop this problem? I tested what would happen if I got rid of all membership pro CSS but while the css disappears (for membership component) , the bug stays.

thanks,

arno