I've never seen "licensed" grid tie systems that didn't do what you describe.
And you won't: They can't be "licenced" if they don't do this.
About the only way you can feed the grid legitimately without such a device is by pushing on an induction motor (as happens sometimes in normal applications, like with a mo-gen system for an electric elevator when the elevator is being slowed down.) Induction motors depend on the grid for excitation and won't self-generate unless you've got enough capacitors hung across them (and your load) to make the net power factor capacitive. (This is unlikely but can happen in islanding, so you generally aren't allowed to hang a prime mover, like a water wheel or windmill blade, on an induction motor, and hook it to the grid, without adding such controllers. Generation from induction motors in an outage should only last for a few seconds while they suck the inertia out of some spinning mass and run down.)
Last I looked it cost about $2,000 extra to have a grid tie inverter with sell-back (and high-current load direct-connect with inverter "helping"), compared to an equivalent inverter from the same manufacturer that only fed the load with inverter output but could charge the batteries / feed the inverter with rectified line power when the grid was up.
In this case the $2k-ish bought you an extra box containing:
- a contactor (to jumper the line to the inverter output) and
- a circuit board that controlled the contactor and acted as a peripheral to the brain of the inverter, providing it with phase measurements (to line-up the inverter phase with the line phase before closing the contactor) and a voltage and frequency measurements (to tell the brain when the grid was failing, so it could open the contactor and cut you loose).
Though this was an add-on box, other products with the function built in also brought a similar premium compared to non-sell equivalents from the same manufacturer.
Straight grid-tie devices feed the harvested power to the grid and depend on it for interconnect and timing reference. Yes they don't feed a dead grid - but that means they don't feed YOU when the grid is down, either.
I'm maybe three years out-of-date on this information so the market may have changed.