This is on the 5E OGL sheet: Casting spells from the sheet doesn't always decrement the "spell slots remaining" counter.  For example, I have an NPC with the following 1st level spells: Detect Magic Mage Armor Ray of Sickness Shield When I cast all but the Ray of Sickness from the NPC's sheet, the number of spell slots remaining is decremented, and a message appears in the chat stating how many spell slots are remaining.  However, when I cast Ray of Sickness, it does neither: it does not decrement the spell slots remaining counter, and no message appears in the chat. This appears to only affect spells that are considered "attacks".  For example, Fireball is also not a problem but Scorching Ray, which rolls attack dice, has the same issue - the spell slots remaining are not decremented.