Font and imageTiles problem with libnds

main.cpp

#include <nds.h>
#include "font.h" //GRIT generated header
#include "image.h" //GRIT generated header
ConsoleFont font;

void setupFont()
{
    const int tile_base = 1;
	const int map_base = 0;
	
	PrintConsole *console = consoleInit(0, 0, BgType_Text8bpp, BgSize_T_256x256, map_base, tile_base, false, false);

	font.gfx = (u16*) fontTiles;
	font.pal = (u16*) fontPal;
	font.numChars = 256;
	font.numColors = fontPalLen / 2;
	font.bpp = 8;
	font.asciiOffset = 0;
	font.convertSingleColor = false;
	consoleSetFont(console, &font);
}

void refreshFont()
{
	consoleSetFont(NULL, &font); //The NULL parameter is understood as the current console
}

int main ()
{
    //Graphics initialization, palette copying, etc.
    dmaCopy(&imageTiles, bgGetGfxPtr(6), imageTilesLen); //6 is the hardcoded id that is correct in my case
    setupFont();
    //Font works at this point
    
    dmaCopy(&imageTiles, bgGetGfxPtr(6), imageTilesLen); //In actual code, this would copy new tiles
    //Now fonts are invisible D:
    
    refreshFont();
    //Now fonts work again :D, and it shouldn't cause a memory leak
    
    /*
    Soo... Why does the dmaCopy cause the fonts to disappear?
    Any help is appreciated. Please reply either here or in the irc. I can increase my verbosity if requested.
    */
}