If I'm not mistaken, /cs access list isn't supposed to work with xop enabled. /cs access is not an xop command.
UPDATE: Indeed I was mistaken, /cs access list does work with xop on or off, but founders are not going to show in any case.
.:19:24:. * katsklaw is now known as bhc
.:19:24:. * ChanServ sets mode: +qo bhc bhc
.:19:24:. -ChanServ- #Help access list is empty.
.:19:25:. <~bhc> !set xop off
.:19:25:. -ChanServ- xOP lists system for #Help is now OFF.
.:19:25:. -ChanServ- #Help access list is empty.
.:19:25:. <~bhc> !access add bhc 999
.:19:25:. -ChanServ- bhc added to #Help access list at level 999.
.:19:25:. -ChanServ- Access list for #Help:
.:19:25:. -ChanServ- Num Lev Nick
.:19:25:. -ChanServ- 1 999 bhc
.:19:25:. -ChanServ- End of access list.
.:19:25:. <~bhc> !set xop on
.:19:25:. -ChanServ- xOP lists system for #Help is now ON.
.:19:25:. -ChanServ- Access list for #Help:
.:19:25:. -ChanServ- Num Lev Nick
.:19:25:. -ChanServ- 1 SOP bhc
.:19:25:. -ChanServ- End of access list.
Anope version: Anope-1.8.5-git (3067) services.irc UnrealIRCd 3.2.x - M (enc_none) -- build #1, compiled Apr 23 2011 19:33:48