Why did 1Password 8 auto-lock?

I've just migrated to 8. The auto-lock after X idle minutes feature has changed. I am no longer able to enter the amount of time I prefer. In fact, this change has made 1Password either more annoying or less secure for me.

In my situation, I do like having auto-lock on ... but after 12 hours. Generally speaking, I don't particularly like having to enter my complex and long password very often, and I've deemed that 12 hours splits my balance between risk and annoyance. 8 hours is too short, and Never is too long. Why has the ability to select a custom time been taken away?