How to enter game mode/fullscreen properly with a wireless mouse when playing minecraft?

[Windows Server]

I am playing minecraft through windows, I usually click onto fullscreen and then my mouse controls only where I look around within the game, although since recently, I have found that if I look up or down, the mouse acts as if on the windows homescreen, and pulls up the top or bottom hotbars, causing me to not be able to look around and therefore stopping me from playing, please could I have some help with this?

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