I've encountered a major issue on three managed sites. This past week, I updated to VirtueMart version 4.6.0 11214.
The update went well until I saw users having trouble completing their orders. I ran a test, and the problem is that the error message "Invalid Token, in view=cart task=updatecart" appears. It's not possible to proceed with the order.
Regards
Joomla! 5.4.0
PHP version 8.4.5