So I’m rewriting my 2D culling kd-tree for my graphics engine, and a strange bug pops up. On release mode, one of the images vanished. Since it didn’t happen in debug mode, it was already a heisenbug. A heisenbug is defined as a bug that vanishes when you try to find it. It took me almost a day to trace the bug to the rebalance function. At first I thought the image had simply been removed from a node accidentally, but this wasn’t the case.
