Ah, so your leader is a

Knowledge Hoarder 

Knowledge is power, and some leaders are reluctant to share it for fear of losing control. It's old school leadership and it's like being in a treasure hunt where the map is locked away in a vault, and only they hold the key. 

Thanks for sharing. I can imagine that adds an extra layer to your day having to think about ‘how’ to interact with them.  I have shared 3 great strategies when dealing with a Knowledge Hoarder leader in my blog.  
Drop me an email and share any strategies that work for you.