Spark 2.5.7 clsoe to tray function broken on SUN150/AMD64

pressing to close the window results in the main buddy window dissapearing, but on Ubuntu Linux, Gutsy, AMD64 using SUN150_11 runtime, the imagined close-to-tray fails to occur, other discussion pages remain open. Terminating all java processes and restarting doesnt solve as it appears to run ‘to tray’ at startup.

The workaround if this is forgotton is to set startHidden=false