Fix #4360

lib/irrlicht/source/Irrlicht/CIrrDeviceSDL.cpp

@@ -66,6 +66,13 @@ CIrrDeviceSDL::CIrrDeviceSDL(const SIrrlichtCreationParameters& param)
 	// noparachute prevents SDL from catching fatal errors.
 	SDL_SetHint(SDL_HINT_NO_SIGNAL_HANDLERS, "1");
 	SDL_SetHint(SDL_HINT_ACCELEROMETER_AS_JOYSTICK, "0");
+
+#ifndef MOBILE_STK
+	// Prevent fullscreen minimizes when losing focus
+	if (CreationParams.Fullscreen)
+		SDL_SetHint(SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS, "0");
+#endif
+
 	u32 init_flags = SDL_INIT_TIMER | SDL_INIT_VIDEO;
 	if (SDL_Init(init_flags) < 0)
 	{