BlAsyncElementValuable>>entryPriority elements that aren't yet attached to a scene should be run at low priority.
BlAsyncElementValuable>>entryPriority elements that aren't yet attached to a scene should be run at low priority.

Previously unattached elements were run at high priority on the assumption that they were being viewed in an inspector.  This is a relatively rare case, and doesn't work for pre-loading elements, where they should be run at lower priority than visible elements.
pharo-graphics/Bloc