Viber Window Too Big on Gnome

After I updated my Viber to version 6.5.5.1481-2 on my Fedora box, it launched with a very big window interface! See below.

Looks like it's an auto-scaling issue on an application running on a high resolution screen.

Someone suggested to set QT_AUTO_SCREEN_SCALE_FACTOR to zero (0).

Now, I have my application launcher viber.desktop as so...

[Desktop Entry]
Name=Viber Comment=Viber VoIP and messenger 
Exec=bash -c 'QT_AUTO_SCREEN_SCALE_FACTOR=0 /opt/viber/Viber %u' Icon=/usr/share/pixmaps/viber.png Terminal=false Type=Application Categories=Network;InstantMessaging;P2P; MimeType=x-scheme-handler/viber;

Viber for normal vision, back.

Thanks, someone (mrreverendpain)!

(src. https://www.reddit.com/r/linuxquestions/comments/5rm8so/issue_with_viber_interface_scaling/)