I'm trying to get a simple responsive BootstrapExtraComponents NavBar working. I have a form that just has:
container-fluid
row
col-md-12
navbar
It's ticked as 'collapse' in the properties, and the designer shows it collapsed with a 'hamburger' menu button when I switch to tablet or mobile view. However when I run it in Chrome (or Edge for that matter), enter developer mode and switch the emulation to a small screen size like iPad or iPhone, it doesn't collapse.