Replace FIXME with a detailed explanation of the issue

apps/openmw/engine.cpp

@@ -386,7 +386,11 @@ void OMW::Engine::createWindow(Settings::Manager& settings)
     traits->windowName = SDL_GetWindowTitle(mWindow);
     traits->windowDecoration = !(SDL_GetWindowFlags(mWindow)&SDL_WINDOW_BORDERLESS);
     traits->screenNum = SDL_GetWindowDisplayIndex(mWindow);
-    // FIXME: Some way to get these settings back from the SDL window?
+    // We tried to get rid of the hardcoding but failed: https://github.com/OpenMW/openmw/pull/1771
+    // Here goes kcat's quote:
+    // It's ultimately a chicken and egg problem, and the reason why the code is like it was in the first place.
+    // It needs a context to get the current attributes, but it needs the attributes to set up the context.
+    // So it just specifies the same values that were given to SDL in the hopes that it's good enough to what the window eventually gets.
     traits->red = 8;
     traits->green = 8;
     traits->blue = 8;