Defects

Circle around the intake duct. Hot runner system. Material polypropyleneAttachment 327

Adjust heat at tip of valve gate and see if slowing the injection rate helps.
Rick

In addition to Ricks comments, it appears that you may be trying to over pack the mould and "BALLOONING" is visible at the surface around the gate. The stress marks from the ejector pins would suggest this.

What was the conclusion to this?

What is at bottom, and bigger ejector the same size as the circle? Actually, I am thinking of ejector rebounding after holding pressure removed.

It looks, that the part is overpacked too much...… but this will not solve the sprue issue :-)

This part is way too over packed to even worry about the blush at the gate. Is that defect on a short shot? Try reducing initial fill speed, adding extruder delay or reducing recovery (screw speed/BP). But first... get rid of the pin push.