Unable to open lock (Great Hall)

[D.Devil]

So I'm busy getting my game 100% completed and only need a few more field guide pages to do so. I have completed everything else and yes I have Alohomora 3 too.

As I'm looking for field guide pages in the Great Hall I stumbled upon a door which is locked, but doesn't give me the option to unlock. I've seen this lock multiple times during my playthrough and thought it may be progression locked, but after completing all main/side quests it still is locked..

Does anyone know why and/or how to get through?

https://steamcommunity.com/sharedfiles/filedetails/?id=2937197955

[Paraskuron]

I'm also curious about that door. I'm on the hunt for the missing pages too.
That's the one near the detention room, right?
Did you, or anyone else, find out what's going on with that lock?

Edit: Nevermind, found out how to get through that door. Stupid lock xD

[ReaperPrime]

The press x to pick lock bubble is missing. If you go close and push x the lock pick screen will load :-)

[Paraskuron]

Yeah, found it out after press the interact button randomly near it xD
Thanks anyway :-)