This is just a small (er, maybe not that small) update to let you know that the elusive disappearing/reappearing powerups/enemies bug in Vertical Force was finally fixed, bumping up compatibility from 71% to 76%!
After many painful attempts to try and track down this bug, the answer ended up being very simple...
This bug had a number of symptoms. The most obvious was that very early in the game, powerups would disappear/reappear: