I don't know if this bug has been reported yet but this is the third time I meet a desynchronization issue.
First time was here
http://www.phantasystaronline.net/forum/index.php/topic/23436-moderate-abuse/
Second time I was in a room with my 2 characters and 2 friends but my second char couldn't see them while they could only see my first char.
Third time :
00:11:56 42156269 Linde thatss why ppl need 2 DF / DM per char xd
00:12:18 42103825 xo ye..cuz they need ridic hit on it
00:12:45 42103825 xo the good thing about Two kamui..always hits special
00:12:49 42156269 Linde I prefer 50 50 0 50 weap to 0 0 0 0 50
00:12:57 42156269 Linde
00:13:00 42156269 Linde with 0 hit ?
00:13:09 42103825 xo yes cuz its zalure
00:13:32 42156269 Linde hey Orgo
00:13:32 42103825 xo most powerfull daggers
00:13:33 42155657 Orgodemrk hmm
00:13:41 42155657 Orgodemrk Is the other guy here?
00:13:44 42155657 Orgodemrk I can't see them.
00:13:45 42156269 Linde ok I didnt know xd
00:13:53 42156269 Linde no we are 3 atm
00:14:05 42155657 Orgodemrk I can't see other person.
00:14:10 42155657 Orgodemrk woo
00:14:17 42156269 Linde neither do I
00:14:23 42155657 Orgodemrk hmm
00:14:34 42156269 Linde what
00:14:35 42155657 Orgodemrk I mean, I only see 2 people
00:14:36 42156269 Linde do you see me ?
00:14:38 42156269 Linde Ah ok
00:14:42 42156269 Linde thats it
00:14:43 42103825 xo well i gotta go now..i will text u tomorrow about the needle
00:14:49 42103825 xo who u texting with?
00:14:51 42103825 xo
00:14:53 42156269 Linde we are 3 including oyou
00:14:58 42156269 Linde o_o
00:14:59 42155657 Orgodemrk yeah, I don't see xo
00:15:02 42155657 Orgodemrk or whoever
00:15:09 42156269 Linde yes Xo is here
00:15:10 42103825 xo its only us two here right?
00:15:12 42156269 Linde just next to me
00:15:19 42155657 Orgodemrk yep, can't see anyone else.
00:15:22 42156269 Linde Xo is also asking whats happening
00:15:27 42156269 Linde Game desynch again x)
00:15:36 42156269 Linde Orgodemrk is here
00:15:37 42103825 xo at least i only see us two
00:15:43 42103825 xo
00:15:54 42155657 Orgodemrk oh well.
00:15:58 42156269 Linde and just tried to join again the room and still doesnt see you xD
00:16:11 42103825 xo i gotta go now anyways
00:16:14 42156269 Linde you were able to talk while he was joining lol
00:16:20 42103825 xo so i will text you tomaw about the neelde
00:16:24 42156269 Linde ok, Xo gotta go
00:16:30 42156269 Linde np cya
00:16:31 42103825 xo bye byw
As you can notice, when this bug happens, none of the concerned players can see each other in the room. They are like ghosts that only the room host I believe can see them all.