You have that right. I hired one while he was "normal". About 18 months later he went into a manic phase and became physically dangerous. Cost me a small fortune to fire him and repair the damage to my business.
The really sad part is that the high of the manic phase feels good. They are very resistant to taking the meds.
When they crash, they come back, promising to take their meds, but you know the next time the manic phase starts to kick in, they will be off for another run.
I have done my time on that one -- no more.
And then it isn’t their fault, in their perception, if they blew a ton of money or damaged something.