Looked at arcade romlist and all matue games are labled "*Mature*"
2 examples
galpanica;Gals Panic (MCU Protected);Arcade;galpanic;1990;Kaneko;Puzzle / Outline * Mature *;;;;;0;;;;;
apparel;Apparel Night (Japan 860929);Arcade;;1986;Central Denshi;Tabletop / Mahjong * Mature *;;;;;0;;;;;
I took the "*" of each mature title and that did not make a difference.
I assumed the the filters for mature contained under favorites allowed you to select mature games for you favorites in arcades if you choose them but would not show up in the regular arcade list.
I even removed the Mature rule under each favorites category and left the "not_contains mature" under each global_filter and that didnt make a difference either
