Why thread limitations on mouse reads?

If I have a thread that passes a value to a property who in turn makes
use of a call to box.mouseinside, box.mouse.x, or box.mouse.y, the
follwing error is given:

           Scheduler: a JavaScript thread spawned with ibex.thread()
threw an exception:
                          at
file:src/org/ibex/theme/win2k/scrollbar.t:36
                          at trap on property "action"
                          at file:src/ibex/lib/repeatable.t:30
                      JSExn: you cannot read from the box.mouse property
in background thread context
                          at org.ibex.Box.get(Box.java:523)
                          at
org.ibex.js.Interpreter.run(Interpreter.java:313)
                          at
org.ibex.js.Interpreter.resume(Interpreter.java:39)
at org.ibex.js.JSFunction.perform(JSFunction.java:31)
                          at
org.ibex.Scheduler.defaultRun(Scheduler.java:77)
                          at org.ibex.Scheduler.run(Scheduler.java:54)
                          at org.ibex.Scheduler.init(Scheduler.java:17)
                          at org.ibex.Main.main(Main.java:101)

This seems like a very unecessary limitation and rules about basically
any time-based interaction with the mouse.
-- 
- Charlie

Charles Goodwin <[email protected]>
Online @ http://www.charlietech.com