ALLEGRO_AUTO_CONVERT_BITMAPS might not be working when displays get destroyed/re-created

[SiegeLord]

A report from Discord:

Are you creating bitmaps before display creation, creating the displays and the bitmaps stay as memory bitmaps?
I'm creating them after, but I destroy and create displays when I switch between fullscreen and window
Maybe I misunderstood the docs?
"They also will remain video bitmaps if the last display is destroyed and then another is created again." (ALLEGRO_CONVERT_BITMAP). I guess this doesn't mean they will be converted to video bitmaps when you create another display, then?
Seems they just get converted to memory bitmaps and stay that way

[ReiquelApplegate]

The only place ALLEGRO_AUTO_CONVERT_BITMAPS is used in the code is in display.c in al_create_display