softhddevice Bug in OpenGl OSD-Bug (mit osdteletext)

void cDisplay::CleanDisplay() {
    enumTeletextColor bgc=(Boxed)?(ttcTransparent):(ttcBlack);
    if (!osd) return;

    osd->DrawRectangle(0, 0, outputWidth, outputHeight, GetColorRGB(bgc,0));

    // repaint all
    Dirty=true;
    DirtyAll=true;
}

....

void cDisplay::RenderTeletextCode(unsigned char *PageCode) {
    // Interprete teletext code referenced by PageCode
    // and draw the whole page content into OSD.
    // PageCode must be a 40*24+12 bytes buffer

    HoldFlush();

    cRenderPage::ReadTeletextHeader(PageCode);

    if (!Boxed && (Flags&0x60)!=0) {
        Boxed=true;
        CleanDisplay();
    } else if (Boxed && (Flags&0x60)==0) {
        Boxed=false;
        CleanDisplay();
    } else
        CleanDisplay();

    cRenderPage::RenderTeletextCode(PageCode+12);

    ReleaseFlush();
}