It is using NP patrol check, but the option is only visible when the user is allow to set or see patrol marks

I'm talking about the pref option, which is defined at Preferences.php. It uses the RC check. I'm an admin at enwiki and can see no NP preference option, but I'm also an admin at testwiki and I can see both RC and NP.

Okay, you are talking about user option 'newpageshidepatrolled' on Special:Preferences. At first look it seems okay to adjust the check.

Looking at option 'watchlisthidepatrolled' (for Special:WatchList) there is another check, maybe needs also adjust to avoid showing that for user not allowing to patrol (or not having the option on Special:Watchlist).

Indeed.
So it's okay if I make a commit fixing both issues ?

Yes, just calling it about adjusting patrol checks on preferences or so.

Change 191122 had a related patch set uploaded (by Cenarium):
Adjusting patrol checks for RC and watchlist prefs

https://gerrit.wikimedia.org/r/191122

Patch-For-Review

Change 191122 merged by jenkins-bot:
Adjusting patrol checks for RC and watchlist prefs

https://gerrit.wikimedia.org/r/191122