Bug: Mouse Clicks not responding after set Input UI, then to Game

Development Programming & Scripting UI
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25

I’m also facing this issue in 4.18.1, after a few diging, I’ve found a quick solution. In PlayerController.h

/** Data structure used to setup an input mode that allows only the player input / player controller to respond to user input. */
struct ENGINE_API FInputModeGameOnly :  FInputModeDataBase
{
	/** Whether the mouse down that causes capture should be consumed, and not passed to player input processing */
	FInputModeGameOnly& SetConsumeCaptureMouseDown(bool InConsumeCaptureMouseDown) { bConsumeCaptureMouseDown = InConsumeCaptureMouseDown; return *this; }

	FInputModeGameOnly()
		: bConsumeCaptureMouseDown(false)
	{}

protected:
	bool bConsumeCaptureMouseDown;

	virtual void ApplyInputMode(FReply& SlateOperations, class UGameViewportClient& GameViewportClient) const override;
};

I’ve changed

FInputModeGameOnly()
         : bConsumeCaptureMouseDown(true)
     {}

to

 FInputModeGameOnly()
         : bConsumeCaptureMouseDown(false)
     {}

This might be a dirty patch but for me it does the trick