[SDL] [macOS] SDL_GetDesktopDisplayMode->pixel_density won't update after SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED

[dortamiguel]

I'm using SDL_GetDesktopDisplayMode()->pixel_density to get the scale I should use for the UI in my game like this:

float scale_factor = SDL_GetDesktopDisplayMode(SDL_GetDisplayForWindow(window))->pixel_density;

In this case scale_factor will be 1.f in (low resolution) mode or 2.f if the (Default) mode

If I change this scale while the game is running the SDL_EVENT_WINDOW_PIXEL_SIZE_CHANGED event will happen, but the pixel_density from SDL_GetDesktopDisplayMode won't update. Resizing the window won't help either, the only way of getting the right value is by closing and opening the game again.

Is this a bug or I'm doing something wrong?

In windows to get this same scale I have to use SDL_GetDisplayContentScale but in macos it always returns 1.f, it won't matter if you are in low res mode or high dpi, ¿Is this also a different bug or might be related to this issue?.