Looking at your scope image, it looks as though you have a proper sinewave shaped by the series LC (or LLC). However when current flow does not coincide with other waveforms in the circuit, then it could be lag/lead effect caused by inductors and capacitors.
Thus if current continues to flow after device is supposed to shut off, it is because L value is too large. "Inductor current lags voltage."
If current starts before device is supposed to turn on, then C value is too large. "Capacitor current leads voltage" (characteristically when waveform is sinewave).
Try playing with values, and you'll see the sine crossing zero earlier or later, in relation to gating signals.