This is not an issue as such but an observation.
I have noticed that the default torbrowser-launcher package does not come with dbus-glib as a dependency but requires it to launch the browser normally. Anyone that does not have dbus-glib installed already but has torbrowser-launcher installed may fail to launch the browser post installation and basic configuration. If anyone is facing that issue, please install dbus-glib and your problem will be solved.
Cheers. :)