memory leak : window is still referenced after window.close() when using acitvity indicator or other timer-related callback components

memory leak : window is still referenced after window.close() when using acitvity indicator or other timer-related callback components

here is bug project
https://github.com/carrot-garden/carrot-bugger/tree/master/carrot-bug-pivot-memory-leak-000

with 2 cases

"NO LEAK"
https://github.com/carrot-garden/carrot-bugger/tree/master/carrot-bug-pivot-memory-leak-000/src/main/java/com/carrotgarden/bug/case_1_no_leak

"LEAK"
https://github.com/carrot-garden/carrot-bugger/tree/master/carrot-bug-pivot-memory-leak-000/src/main/java/com/carrotgarden/bug/case_2_leak

basically, if window uses activity indicator it is placed in timer queue and never removed on window.close();

workaround: you must stop activity indicator manually via "on close" event listener;