Fixed a bug where the File Dialog wouldn't show up correctly on linux

src/GUI/IntelliPhotoGui.cpp

@@ -43,7 +43,7 @@ void IntelliPhotoGui::slotOpen(){
         // tr sets the window title to Open File
         // QDir opens the current dirctory
         QString fileName = QFileDialog::getOpenFileName(this,
-                                   tr("Open File"), QDir::currentPath());
+                                   tr("Open File"), QDir::currentPath(), "", nullptr, QFileDialog::DontUseNativeDialog);
 
         // If we have a file name load the image and place
         // it in the paintingArea