There’s more to context sensitive than meets the eye. It also depends in which graph you summon the right-click menu. For example, you cannot have a Delay node inside a function or Spawn Actor From Class in Construction Script.
If an option does not show up in a particular place, it generally means its use there would be invalid. There is a chance you’ve stumbled upon a bug, sure.
Perhaps you can tell where you’re trying to invoke this? Curious to see what can filter out For Loop.
edit: for reference
Flow control in Level Blueprint in 4.22