A problem with Adblock and Roblox

I'm not sure if anyone experienced this.
Adblock works just fine for everything, except for Roblox.
I added the following URLs to the blacklist and blocklist and it worked until Adblock got restarted or paused/resumed after a day or so. (that said, it works fine for a few hours at least)

rbxtrk.com
rbxcdn.com
Then when I checked the blacklist, somehow the three URLs disappeared.
It's very strange. Anyone experienced this or has any solution to this?

Thanks in advance!

Here are screenshots of my current configurations. (I'm a new user, so I am allowed to add only one picture)

Please be specific about where exactly you added your blocklists (exact file name/ full path) and paste your complete adblock configuration (hint, there are at least three different adblock solutions available in OpenWrt, probably more).

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More screenshots!

When it's normal before the URLs disappear.

In other words, luci-app-adblock. The file to edit (to add your desired domains) would then be /etc/adblock/adblock.blacklist (one host, not full URL, per line/ UN*X line endings; adblock needs to be restarted to find your newely added changes).

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Thank you slh,

It works correctly now though.

My problem is that somehow only the three URLs disappear after a day or so.
I don't have any other issues with other URLs.

Currently, I have 247 URLs in the blacklist and only the 3 URLs disappear randomly.
It has happened to me everyday since I tried it a few days ago.
Please see my original post. I added an image there.

# wc -l /etc/adblock/adblock.blacklist 
28 /etc/adblock/adblock.blacklist

this has worked reliably for at least half a decade for me, using a variety of different routers (plus a set of externally managed blocklists). So this should work and remain stable, that's why I asked for the full filesystem path where you added your blocked domains (as technically, you could have modified the working set of files under /tmp/, instead of adding them to the intended - fixed local blocklist sources).

Thank you for the info.
I will give it a try.

By the way, here is the log that I just collected after it just occurred again.

Thu Nov 16 20:12:16 2023 user.info adblock-4.1.5[32397]: adblock instance started ::: action: reload, priority: 10, pid: 32397
Thu Nov 16 20:12:16 2023 user.debug adblock-4.1.5[32397]: f_jsnup ::: status: running, cnt: 247, mail: 0, mail_service: /etc/adblock/adblock.mail, mail_cnt: 0, mail_pid: -
Thu Nov 16 20:12:16 2023 user.debug adblock-4.1.5[32397]: f_uci ::: config: dhcp, change:
Thu Nov 16 20:12:16 2023 user.debug adblock-4.1.5[32397]: f_uci ::: config: firewall, change:
Thu Nov 16 20:12:16 2023 user.debug adblock-4.1.5[32397]: f_temp ::: tmp_base: /tmp, tmp_dir: /tmp/tmp.DNnncD, sort_options: --temporary-directory=/tmp/tmp.DNnncD --compress-program=gzip --parallel=2, pid_file: /var/run/adblock.pid
Thu Nov 16 20:12:16 2023 user.debug adblock-4.1.5[32397]: f_main ::: memory: 233/156/144, cores: 2, safe_search: 0, force_dns: 0, awk: /usr/bin/awk
Thu Nov 16 20:12:16 2023 user.debug adblock-4.1.5[32397]: f_list ::: name: iplist, mode: iplist, cnt: 0, in_rc: 0, out_rc: 0
Thu Nov 16 20:12:16 2023 user.debug adblock-4.1.5[32397]: f_list ::: name: blacklist, mode: blacklist, cnt: 244, in_rc: 0, out_rc: 0
Thu Nov 16 20:12:16 2023 user.debug adblock-4.1.5[32397]: f_list ::: name: whitelist, mode: whitelist, cnt: 1, in_rc: 0, out_rc: 0
Thu Nov 16 20:12:16 2023 user.debug adblock-4.1.5[32397]: f_list ::: name: -, mode: merge, cnt: 244, in_rc: 0, out_rc: 0

I added the three lines again. I will see if it fixes the problem.
Screenshot 2023-11-16 215321

It is the same thing.
The three URLs disappeared from the blacklist.
It is super strange that only the three roblox domains disappear out of 247 domains.