SDL screen minimise/maximise issue

I have a minimise/maximise bug in my SDL application that has been driving me nuts! When I minimise the screen and then maximise it again the rendering freezes (ie doesn't refresh any more). If I re-size the screen the rendering refreshes again. The problem DOESN'T occur when I go from minimised to re-sized, only from minimised to maximised. I have provided a simple code example below which is supposed to make the screen flash through varying shades of grey. When you minimise and maximise you'll see it freezes...

I'm currently running SDL2.0 v 2.0.3 on Windows 10 machine (experienced the same problem running on previous Windows 7 machine). 

Would really appreciate some help. Thanks.

//FLASHING SCREEN CODE
//demonstrates screen freeze when you minimise then maximise the screen....

#include "SDL.h"
#include "SDL_image.h"

using namespace std;

int main( int argc, char* args[] )
{
    //Initialise SDL2, declare Window + Renderer
    SDL_Init( SDL_INIT_VIDEO | SDL_INIT_AUDIO ); //Initialize SDL for video and audio
    SDL_Window* pWindow = NULL;
    SDL_Renderer* pRenderer = NULL;
    pWindow = SDL_CreateWindow("Minimise Maximise Test", 50, 50, 1200, 600, SDL_WINDOW_RESIZABLE | SDL_WINDOW_MAXIMIZED);
    pRenderer = SDL_CreateRenderer(pWindow, -1, SDL_RENDERER_TARGETTEXTURE);
    SDL_Color screenColour = {0, 0, 0}; //Screen colour which is going to change

    //SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");  // make the scaled rendering look smoother.
    //SDL_RenderSetLogicalSize(pRenderer, WINDOW_WIDTH, WINDOW_HEIGHT);

    //SDL event for detecting X-out (quit)
    SDL_Event event;
    bool quit = false;

    //Loop
    while( quit == false )   //While SDL has not been X'ed out
    {
        ////Handle quit
        if (SDL_PollEvent(&event) != 0)
        {
            if(event.type == SDL_QUIT) quit = true; //Press X-out to quit (but not visible on fullscreen)
        }

        //Make screen flash by changing its colour
        screenColour.r++;
        screenColour.g++;
        screenColour.b++;

        //Render the screen
        SDL_SetRenderDrawColor(pRenderer, screenColour.r, screenColour.g, screenColour.b, 255);
        SDL_RenderFillRect(pRenderer, NULL);
        SDL_RenderPresent(pRenderer); //like SDL_flip

    }

    //Shutdown
    SDL_DestroyRenderer(pRenderer);
    SDL_DestroyWindow(pWindow);
    SDL_Quit();
    return 0;
}

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