Episerver A/B testing auto get submission

1. Create a Form with some element then set a [Page display after submission] (Picture 1).
2. Create a Test Page using the Form created in step 1 then publish (Picture 2).
3. Edit Test Page then Start a A/B Testing with conversion goal is [Landing page] the same as [Page display after submission] (Picture 3).
4. Open Test Page by incognito window but did nothing (Picture 4).
5. Return to A/B testing Page (Picture 5).

View has been count but not Conversion

Although didn't submit form from Test Page but still count for Conversion.