destroyonhide=true in gui causes client.var saving error

[Prozac]

when, in a gui window, that window has destroyonhide=true,
and other functions controled through the window alter a client.variable,
when the window is closed - the client.variable cannot be read again by any other npc
unless the player reconnects to the server.

if you don't follow this error, i can explain it again ...