The main menu disappear some times on my site.
1st case
When I change language the site change the language but don't show the main menu, not before I click the flagg once more time.
2nd case
When I go to the cart in VirtueMart the main menu don't show. Some times it does, but not often.
How can I solve this problem?
I use Joomla 3.8.12 and VirtueMart 3.4.0
test on a base template -- Beez or protostar