X-plane does not shut down correctly if FSrealWXv3 is in the "connect" state. It does not matter what state the XPrealWX plugin is in, "start server" or "stop server". The program simply freezes and is removed only by the task manager.
[XPrealWXv3] (ServerThread) - SocketID: 3988 Data in Command: WRIT MsgId: 0013
(ServerThread) - SocketID: 3988 Send Data Command:7 MessageId: 13 Message: OK
[XPrealWXv3] (ServerThread) - SocketID: 3988 Data in Command: REQUEST MsgId: 0002
(ServerThread) - SocketID: 3988 Send Data Command:7 MessageId: 2 Message: Height=0:Alt=94:TAS=3:GS=0:HDG=247.5:VS=0:WindAcDir=201.27:WindAcSpeed=3.86:MagVar=31.3:Vis=14.48:Lat=73.003487:Lon=-85.027168:IsOnGround=1:IsEngineOff=0:IsLandingLightOn=0:IsDoorOpen=0:IsParkingBrakeSet=1:Name=BE58 N45XS:Reg=N45XS:Airline=unknown:Type=unknown:FuelFlow=0.000000:EmptyWeight=3770.000732:MaxCrossWeight=5500.001465
0:02:55.107 I/OVR: User is leaving the holodeck.
0:02:55.107 I/SIM: User confirmed they want to quit
0:02:55.140 D/STM: Transitioning from state state_Normal to state_ShuttingDown
FlyWithLua Info: Load exit file.
FlyWithLua Info: Load exit file.
FlyWithLua Info: FlyWithLua plugin disabled.
G64: 176.107: Plugin Disabled.
[REP 09:57:55] Plugin Disable
If, before exiting X-Plane in FSrealWXv3, you click "Disconnect", the application closes normally.