Normally, when you long-press on HOME button, my Android displays the icons for 8 last apps/activities that were active.
This seems to always be pretty reliable, with one exception.
For some reason, Moon+ Reader app that I ran today does NOT appear on that list of 8 apps. At all.
Is there any possible reason why?
Environment: Motorola Droid X, rooted stock Froyo 2.2 ROM, Zeam Launcher.