Confirmed CK III - Cannot declare war with hook when liege has high crown authority

[klanker]

As Emperor 1997 has written, you need a strong hook in this situation.

 

[klanker]

You were right - Thank you for report and your persistence in investigating this issue. The checkbox to use a hook, strong or weak, is indeed missing from 1.4 declare war window. The issue has been added to our database.