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TPSM82903: Webench startup simulation is wrong?

Part Number: TPSM82903

Tool/software:

Hi Team,

Webench startup simulations were carried out, but the results appear to be strange.

Abnormal voltage rises and falls beyond 0.8 ms.

The simulation conditions are as follows.

Are these results correct?
Note that the waveform seems to be normal when simulated with External FB.
I am wondering if I should design with this VSET.