Lets say you have 10 minutes of 25 stacks of might. If you get a new might that lasts 10 seconds, you’ll have 10 seconds of 25 stacks of might, at which time you’ll go down to 24 stacks of might for the remaining 9 minutes 50 seconds. This seems like incorrect behaviour, might should drop the shortest might applied (in this case, ignoring the 10 second might that was just applied.