Default [Q] Qslide Apps problem

Hi,
I have a problem with two Qslide apps, the Note app and the File manager app: they only work in full screen mode. When I tap the icon to change to multiwindow feature they close almost instantly. Would you please help with this? How can I fix it? (My tablet is LG Gpad 8,3. Android 4.4.2. Software v50020a)
Thank you very much,

Juan Carlos