Some matches-attr rules with {n,} in regex are highlighted as error

[Yuki2718]

AdGuard Extension version

4.1.56

Browser version

Brave v1.52.130

OS version

Windows 10

What filters do you have enabled?

AdGuard Base filter, AdGuard Japanese filter

What Stealth Mode options do you have enabled?

No response

Issue Details

This User rule pussyspace.com,pussyspace.net#?#.itemsetbox [class]:matches-attr("class"="/[0-9A-Za-z]{18,}/") [id] img:not(a img) is highlighted as error. This also caused false positive, but apparently it was due to AdguardTeam/ExtendedCss#166 and not related to the problem here. Error disappers if I remove {18,}, but some rules in Japanese filters don't show error despite having {n,}, namely:

realtime-chart.info#?#.news_b table[border="0"][cellpadding="5"][style="background:#fff"] > tbody >  tr[bgcolor="#fff"] > td.newsarea[style] > a.wl[href^="https://a"][href*=".to/"]:upward(2)
realtime-chart.info#$?#div[id] > [id]:has(> [style^="top:1"]:matches-attr("style"="/top\s*:\s*1\d{3}\.?\d*px/")) + * > [style^="top:1"]:matches-attr("style"="/top\s*:\s*1\d{3}\.?\d*px/") > [onclick]:not(:has(td > a))  { pointer-events: none !important; }
realtime-chart.info#$?#div[id] > [id]:has(> [style^="top:1"]:matches-attr("style"="/top\s*:\s*1\d{3}\.?\d*px/")) + * > [style^="top:1"]:matches-attr("style"="/top\s*:\s*1\d{3}\.?\d*px/") > [style*="font-size:"]:is(b, span, a):not(:has(td > a)) { font-size: 0 !important; pointer-events: none !important; }
realtime-chart.info#$?#td[style^="vertical-align"] div[style*="top"]:matches-attr("style"="/^\s*top\s*:\s*3\d{2}\.?\d*px;?\s*/") > a[id][onmousedown] { pointer-events: none !important; }
realtime-chart.info#$?#td[style^="vertical-align: top"] [onclick*="()"][target="_blank"]:has([style*="background-image: url\(\"data:image/jpg;"]:matches-attr("style"="/height\s*:\s*[12]\d{2}\.?\d*px/")) { pointer-events: none !important; }
realtime-chart.info#$?#td[style^="vertical-align"] [style*="top"]:matches-attr("style"="/^\s*top\s*:\s*3\d{2}\.?\d*px;?\s*/") > a[id][onmousedown] { pointer-events: none !important; }

The only rule also shows error is realtime-chart.info#?#td[style^="vertical-align"] div[id] [style*="top"]:matches-attr("style"="/^\s*top\s*:\s*3\d{2}\.?\d*px;?\s*/") ~ [class][onclick]:has(> [style^="top:1"]):matches-attr("style"="/top\s*:\s*1\d{3}\.?\d*px/"):not(:has(td > a)) which I removed by AdguardTeam/AdguardFilters@7b7094c
The rules seem to work, so maybe they're incorrectly flagged as error.

Expected Behavior

No error

Screenshots

Screenshot 1:

Additional Information

No response

[Yuki2718]

Confirmed it's fixed in 4.2.151 Beta