The game pauses when you have a tutorial popup. You'll need to take a video of whatever you're doing to close the tutorial without unpausing the game, that way we can see what the issue is.
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I'm having the same issue on the current build (V022dhf1) and the issue seems to be solely with exiting the Monsterpedia not the tutorial. When the tutorial is closed you can still interact with the Monsterpedia and all it's sections, but closing the 'pedia causes the game to... not freeze necessarily because it recognizes switching inputs between mouse/keyboard and controller, but it otherwise doesn't respond to your inputs.
Sometimes, however, force quitting the game and immediately restarting and selecting continue will cause whatever glitch is happening to just not trigger and the game will work fine afterwards.
Edit: anytime a tutorial procs while you are in the monsterpedia guaranties triggering the bug.
Okay I think I understand as your way of writing the issue is a little confusing
1. enter monpedia on a new save to prompt the monpedia tutorial popup
2. close popup
3. close monpedia
4. game is now frozen
you also mentioned switching inputs, do you mean to say you're using controller and closing the monpedia then removes control from the controller to mouse and keyboard?
No problem.
As for the switching inputs thing, I was playing with a controller and all the buttons on the UI were showing the controller buttons. Then the freeze happened and since the game was full screened I had to ALT+Tab in order to switch windows so I could close the game but I noticed that when I pressed ALT on the keyboard the UI changed to the mouse and keyboard buttons, and doing anything with the controller caused the UI to switch back again. So while it "freezes" in the sense you cant move or access menus something is still working properly.