Hi Michael,
Thanks so much for your report!
I reproduced the issue and added it to our bug tracker.
All in all a rather strange problem that is probably caused by the display value of the toggle. If you set it to inline-block instead of block, the problem seems to be solved.
Please add the following custom CSS to the menu (on the breakpoint where the mobile menu is showing) and let me know if it fixes the issue:
%root% .bricks-mobile-menu-toggle {
display: inline-block !important;
}
Best regards,
timmse