[Bug Report] Yandex not working

[Ryoyo2]

Expected Behavior

1. Open Yandex.com
2. Search anything
3. See "Block this site" button on results
4. Open Website you want to block
5. Block it
6. Refresh Yandex
7. Site doesn't show up in search

Actual Behavior

• No "Block this site" button on yandex results
• Search results still show sites that should be blocked

Steps to Reproduce the Problem

See expected behavior

Specifications

• Browser: Chrome/Librewolf/Firefox
• Other extensions/add-ons: uBlockOrigin

• Search engine: Yandex.com
• Language: English
• Region: Germany

Other Information

• Tried giving uBlacklist permissions through enabling Yandex in options dialogue
• Tried manually enabling permissions to uBlacklist to access all sites
• Tried different browsers
• "://.website.top-level domain/*" is the format in blocklist options
• Enabled "Add rules blocking whole sites by default"
• Works on every other enabled website

[Ryoyo2]

The issue seems to have been caused by a forgotten Violentmonkey script I had on called "Adguard Extra". After turning it off, it sometimes works.

The styling seems to break most of the time uBlacklist does do its job. Whenever uBlacklist inserts the "uBlacklist has blocked x sites", all search results on Yandex move a bit to the right.
Sometimes it doesn't show "uBlacklist has blocked x sites", sometimes it does.
Sometimes it won't filter blocked sites whenever that happens, sometimes it does.
These are the inconsistencies I have on librewolf that I can't seem to reproduce reliably. I'll investigate further.

[Ryoyo2]

(Only testing on Librewolf currently, still only related to Yandex)

I can't find anything consistent about this issue or reliably reproduce it with any method. It's either random, dependent on search query length or some other parameter - I don't know.

• The styling breakage when something is blocked occurs most of the time but not all of the time (potentially less with shorter queries(?) but honestly I really cannot tell).

• Sometimes it doesn't show the "blocked x sites" first time I search (even though it does filter them), then on refresh it shows said prompt and breaks the styling.

• Sometimes it doesn't seem to filter anything and doesn't do or show anything whether I refresh, do a new search in a new tab or anything else, this is then fixed by a browser restart.

• I've tried figuring out whether this happens due to an interaction with uBlockOrigin but even with uBlock disabled, the behavior is wildly inconsistent.

Another thing I've noticed is extremely long wait times before librewolf r is operable when using many lists. When using several big lists (20k+ lines total), it's not possible to operate any tab at all for ~10+ seconds while CPU/RAM usage spikes heavily. Disabling the biggest lists alleviates this issue. I'm not sure if this is expected and just a compromise one has to make or if this serves as excessive resource usage like described in other closed issues i've seen relating to other browsers.

[BondiBear]

Doesnt work with Yandex, never mind with Yandex image search.