Generic cosmetic rules are not applied to some iframes

[AdamWr]

It looks like the generic cosmetic rules are not applied if the iframe height/width is less than a certain value.

Steps to reproduce:

1. Add this rule:

##h1

2. Go to - https://example.org/
3. Run in browser console:

(() => {
  const frame = document.createElement('iframe');
  frame.src = 'https://example.com/';
  frame.width = '500px';
  frame.height = '200px';   
  document.body.appendChild(frame);
})();

h1 element with text Example Domain should be hidden by this rule - ##h1, but it doesn't work.
It seems that it works correctly if the value of height is greater than 200, like 201, or width is greater than 500, like 501.

Screenshots

AdGuard for Windows version 7.12 nightly 10 (build 4171, CL 1.10.189)

[sfionov]

@AdamWr For small frames (< 100'000 px) generic CSS rules are not applied, please use domain-specific rules.

This behaviour is old and derived from this issue:
AdguardTeam/AdguardBrowserExtension#223

[AdamWr]

I have noticed it in this issue - AdguardTeam/AdguardFilters#141047
Some ads were not blocked by a generic rule in the video player (iframe) with AdGuard for Android (I have already added a specific rule for this iframe).
If it's by design, then fine, I think that it can be closed.

[Alex-302]

Another case
https://worldinmotionvr.com/bolum/gibi-1-sezon-11-bolum-izle/

XRecorder_22042023_155705.mp4

Maybe it's time to change the restriction? Especially if it was related to the memory capacity of devices that are eight years old.

[AdamWr]

Another case - AdguardTeam/AdguardFilters#178952
We have generic element hiding rules, but these rules are not applied on Android, because iframe is too small.
I can add a rule(s) for specific domain, but the problem is, that in this case address of this iframe is changed often.