System debian 12
aapanel version 6.88.3
Domain name is resolved in cloudflare and CDN is enabled.
Assuming the IP is 8.8.8.8 and the two domains are a.com and b.com.
aapanel add a website, domain name for a.com, visit a.com, the page can be opened normally.
The certificate is a self-signed certificate provided by cloudflare, and mandatory https is enabled.
Did not add the domain name b.com, but now b.com can also be accessed normally. According to the previous experience, if the domain name is not added, even if the IP address of b.com is also 8.8.8.8, the page should prompt 404 or other error messages. But now the situation is that all can be accessed, and directly access the IP 8.8.8.8, except for the certificate error, but still can be accessed normally.
What is the reason for this and how can I solve this problem?