Chromium closes all open tabs

These last few days I've been using Usul (with Ubuntu GNOME Shell Remix) a lot, like all the time, specially now with the maxxed RAM.
Trying to use Chromium as my day to day browser too, so now becomes really important to correct that BS about closing all open tabs when the main window is closed.
Extensions to the rescue!
Another extension, or add on, that I now find essential on Chromium:

Window Close Protector