Redstone torches placed on redstone blocks are not instantly off

When a block that changes state when powered is placed next to a source of power, it will be instantly placed in its powered state, as opposed to being placed in a non-powered state and then being powered. However, the redstone torch seems to be an exception to this - when placed on for example a redstone block, it will appear powered for a moment before turning off, instead of being off by default.