CK II - "Leaving crusade" design can easily mess your ironman

[LoomyJDK]

One line summary of your issue
"Leaving crusade" design can easily mess your ironman

Game Version
3.3.3

What expansions do you have installed?
Monks & Mystics, The Reapers Due, Way of Life, Charlemagne, Rajas of India, Sons of Abraham, The Old Gods, The Republic, Legacy of Rome, Sword of Islam, Holy Fury

Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
I was starting my first crusade and wanted to see the different crusading options in the main crusading menu (the menu with the war chest). I accidentally clicked the button to opt-out of the crusade and now my character cannot join back. It is ironman so i got messed up. It says I can join back after a year which is way past the start of the crusade. Please add a confirmation dialog because now the pope hates me and I wanted to Deus Vult.

Steps to reproduce the issue.
1. Crusade Menu
2. Opt-out the crusade
3. Get fucked
4?. Can't opt back in

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[DPS]

It's not a bug when you mess up because you click the wrong button. While I agree that a "Are you sure" confirmation in cases like this makes some sense, if we had to confirm every decision we have to make we'd be deluged with confirmation pop-ups. And anyway, it's a request for a new feature, not a bug report.