Using ofSystemLoadDialog() in Fullscreen

Im currently working on a proyect that works on fullscreen the whole time.
The problem i’ve been having is when i try to generate a load file window using ofSystemLoadDialog(), it doesn’t pop up. However if i use ofToogleFullscreen before using ofSystemLoadDialog(), the window shows up, so right now that’s my temporal solution (see code below). Is there any way to keep the program in fullscreen and still have the window show up?

if (>is(“Open File”)) {
ofFileDialogResult result = ofSystemLoadDialog(“Load File”);
if (result.bSuccess) {
yaLei = TRUE;
path_imagen = result.getPath();

Thanks in advance