it was forgetting to discard alpha, and when creating a bitmap it dropped anything but lua hud, since it does have alpha bits that nothing else has, and with no lua hud involved, it showed all normally, since it didn't have to drop colors with zero alpha. lol.
- don't cut it on the left if tasview is narrow, push it right instead
- don't hide it instantly if it spawns right under the mouse cursor, hide it if mouse leaves *it*, not branch control
- keep consistent Y position