custom rules not working since 4.0.1

[Christy543]

I have used the following custom rules with thunderbird successfully for a long time:

IPTABLES -A "afwall" -p TCP -m TCP --dport 0:464,466:586,588:992,996:65535,994 -m owner --uid-owner 10236 -j "afwall-reject"
IPTABLES -A "afwall" -p TCP -m TCP --dport 465,587,993,995 -m owner --uid-owner 10236 -j RETURN

Now"
I updated android to 16 and thunderbird to 14.
I noticed that most newsletters and ad emails are full of pictures where they used to be blocked because I delete them anyway.
unless thunderbird is pushing some dodgy trick, the rules above should block communication through ports TCP:443 and TCP:80.

I would like to add that QUIC UDP 443 is blocked across the board and IPv6 is disabled.

I would appreciate any direction - Thanks