Some ':matches-property()' rules don't work

I'm not sure if it's a correct place to report this issue, because it happens only with extensions.

Steps to reproduce:
1. Add this rule:
```
pudelek.pl#?#div[data-testid] div[class*=" "]:matches-property("/__reactInternalInstance/.return.memoizedProps.slotNumber"="/\d+/")
```
2. Go here - [https://www.pudelek.pl](https://adguardteam.github.io/AnonymousRedirect/redirect.html?url=https%3A%2F%2Fwww.pudelek.pl)

This rule should hide ad leftovers, but for some reason it doesn't work with extensions (3.5.31), but works fine with AdGuard for Windows (7.6 nightly 12 (build 3452, CL 1.7.153)).

Screenshot