Only show HUD when inventory is open. Should work for mods UI as well (has been tested with MSI II and RPG System).

Manual mode, when activated, allows to hide HUD by pressing hotkey (SHIFT + E by default).

Known limitations:

• Quickbar hotkeys don't work if quickbar is not displayed on the screen, so inventory may need to be opened before using hotkeys.
• Quickbar does not disappear after closing inventory if there is something in the cursor. This is intentional workaround, to keep item (e.g. grenade) in the hands visible.

Inspired by Burn-in Prevention mod.