Effects are only applied two times on opponents, should be three times

Effects like Break Armour, Break Weapon, Fire Arrows and so on are only applied two times on the opponents before the oldest one is overwritten. Before R68 they where stackable up to three times on the enemy.

I report this in Critical Issues because (at least) fire magic depends on DOTs it has no strong DD. Fire was already nerved some release ago by reducing stack-size from four to three.