CK II - [3.0.1] Cannot convert Tribal to Feudal

[China is Eternal!]

One line summary of your issue
[3.0.1] Cannot convert Tribal to Feudal

Game Version
CDYZ

What expansions do you have installed?
Jade Dragon,
Monks & Mystics,
The Reapers Due,
Conclave,
Horse Lords,
Way of Life,
Charlemagne,
Rajas of India,
Sons of Abraham,
The Old Gods,
The Republic,
Legacy of Rome,
Sword of Islam,
Holy Fury, All of the above

Do you have mods enabled?
No

Please explain your issue is in as much detail as possible.
I cannot convert from Tribal to Feudal in my current game. I have reformed slavic faith. I have stone hillfort in my capital. Highest tribal organization. Fulfilled all requirement and cannot convert.

Steps to reproduce the issue.
1. Start game
2. Go to decisions and notice the issue

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[jruderman]

Based on the screenshot, it looks like you're seeing the requirements for convert_to_feudalism_vassal (e.g. references to liege government). But you're an emperor, so you should be seeing the requirements for convert_to_feudalism_indep instead. Very strange. Any idea why the game might consider you to be "not independent"?