Fix no-notification logic

[nephros]

Closes: #275

[Olf0]

I would have assumed this to be equivalent (before and after the change), apparently you thought so, too. I only wonder, why similar constructs at other places seem to work fine.
By the help of your explanation I understood the logic error easily: Once seen, "it jumps into ones face". Thank you!

At least I understand now, why this was not in PM ≤ 3.2.0, only in 3.2.1: It was introduced 14 December 2021 and we made only this single release since then.