If you attempt to scroll through your inventory (keys, potions, etc) when the HUD elements have started fading, it will produce peculiar results.
The item selection will be stuck to whatever inventory item you last selected. For example, if you have only a power potion in your inventory, you wait for the inventory to start fading, press the respective key to cycle inventory items again, the power potion in the top right will have disappeared. Even if you wait 1 minute and approach any item in the world, pressing the "Use" key will cause your character to drink the power potion.
The only way to get out of this state where you are locked in your inventory is to wait for the top right HUD elements to completely fade and try cycling the inventory again.
If you attempt to scroll through your inventory (keys, potions, etc) when the HUD elements have started fading, it will produce peculiar results.
The item selection will be stuck to whatever inventory item you last selected. For example, if you have only a power potion in your inventory, you wait for the inventory to start fading, press the respective key to cycle inventory items again, the power potion in the top right will have disappeared. Even if you wait 1 minute and approach any item in the world, pressing the "Use" key will cause your character to drink the power potion.
The only way to get out of this state where you are locked in your inventory is to wait for the top right HUD elements to completely fade and try cycling the inventory again.