[SOLVED] Keydown event times out when another key is pressed

uniform bool Keyboard_F <source = "key"; keycode = 0x46; >;

void VS(in uint id : SV_VertexID, out float4 position : SV_Position, out float2 texcoord : TEXCOORD)
{
    texcoord.x = (id == 2) ? 2.0 : 0.0;
    texcoord.y = (id == 1) ? 2.0 : 0.0;
    position = float4(texcoord * float2(2.0, -2.0) + float2(-1.0, 1.0), 0.0, 1.0);
}

float4 PS(float4 pos : SV_Position, float2 texcoord : TEXCOORD) : SV_Target
{
    float4 color = 0.5;
    
    if (Keyboard_F) { color = 0.0; }

    return color;
}

technique test < enabled = 1; >
{
    pass 
    {
        VertexShader = VS;
        PixelShader = PS;
    }
}