True or False or False = False!

(True or False or False) = True.

function TPSDConnectionMonitor.IsOnline: Boolean;

var

  cState: TPSDConnectionState;

begin

  Result := (Not OfflineStoreEnabled) or (Not Enabled) or IsOnline(cState);

end;

See the picture.  

FOfflineStoreEnabled = False

FEnabled = True

IsOnline(cState) does an and between two states and returns False

The expression

 (Not OfflineStoreEnabled) or (Not Enabled) or IsOnline(cState)

is (True) or (False) or False

and Result is False! #WTF  

Add extra paranthesis to the expression 

( (Not OfflineStoreEnabled) or (Not Enabled) or IsOnline(cState))

is ((True) or (False) or False)

and Result is True as expected!

Can someone make sense of this?

#XE5