CK II - Designate heir button disappears when clicked, reformed Hellenic. Version 3.0 QXTU

[crystalhippo96]

One line summary of your issue
Designate heir button disappears when clicked, reformed Hellenic. Version 3.0 QXTU

Game Version
3.0 QXTU

What expansions do you have installed?
All of the above

Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
Reformed Hellenism after restoring the Roman Empire. All titles are agnatic-cognatic primogeniture or agnatic primogeniture. When trying to designate a different son as an heir, the crown button on the character's portrait disappears and changes to the blood icon for family members after being clicked without changing the heir. All sons currently appear as valid heirs, but cannot be designated. When I hover over the button to change heirs, the requirement "You can only Designate that could potentially be in the line of succession" is not met although all of my character's sons are in the line of succession. Reformed religion with traits civilized, stability, meritocracy, hierocratic. Any ideas? Seems like it may be a bug.

Steps to reproduce the issue.
Reform roman empire then reform hellenism with meritocracy and stability, with all titles as agnatic or agnatic-cognatic primogeniture. Try to change heir designation.

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[CyberSpyder]

How do you have the Roman Empire with Primogeniture? Isn't it supposed to be fixed to Imperial Elective?

 

[crystalhippo96]

Started with a custom kingdom and agnatic-cognatic primogeniture, then created Byzantine Empire and other kingdoms which kept the same succession laws. Late feudal administration laws. When the Roman Empire was restored it kept the same laws as the Byzantine Empire.

 

[crystalhippo96]

UPDATE:

Found that by granting the honorary title 'despot' to the intended heir, I can change the designated heir. Seems to work fine! Not sure if things are screwy in the game or I just didn't understand the mechanics of the Roman Empire fully.

Man, this Holy Fury is great. Back to it!