Typo in Precog's Spell Rewind Anomaly?

[Kishmo]

The Spell Rewind temporal anomaly says:

When you cast a spell that affects only one target, and that target successfully saves against that spell, you can use a paradox to regain the spell slot used to cast that spell. The paradox used must be at least double the spell’s level. If you use this ability with a spell that normally has effects on a failed save, the spell instead has no effect.

The last sentence should read, "...a spell that normally has effects on a successful save..." right? The idea is that you rewind the spell from ever happening, so even though your target saved againt it, it has now never happened - so no effects on a successful save, right? (Or am I just not parsing that correctly?)

[Xenocrat]

You’re right, I’ve read that five times the way it should be rather than the way it is because it’s the only thing that makes sense.

[Garretmander]

Xenocrat wrote:

You’re right, I’ve read that five times the way it should be rather than the way it is because it’s the only thing that makes sense.

What is that effect called where you substitute the obvious answer for what you are actually reading? because I had i too.