Quick answer: Unreal SetInputModeGameOnly suppressing the Tab key globally? Game-only input mode disables Tab for UMG accessibility - use SetInputModeGameAndUI for partial UI accessibility.

Game uses Tab for inventory. Switching to game-only mode breaks Tab; players can't open inventory.

Use GameAndUI mode

Allows UI input alongside gameplay. Tab works for both contexts.

Or remap Tab

For pure-gameplay mode, use a different key for inventory. Removes the mode conflict.

Custom input mode

Subclass UInputModeBase. Customize per-key behavior. Heavy; precise.

“Input modes are coarse. Game-only is genuinely game-only.”

If your game uses UI-bound keys during gameplay, GameAndUI is the right mode. Game-only is for FPS-style total focus.

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