[UE 5.1.1] Problem With "Game and UI" Input Mode

The right click is probably tied to camera logic. Either in the player controller or character.

Have a bool that toggles if you are in the inventory and override that camera logic (through a branch)

either

  • enforce the cursor visibility there
  • make the engine ignore the camera input.

You can also have a full screen canvas in inentory that triggers iu only (its a 100% transparent)