Help In SolidifyOnContact exsample, Diffusion and Normal of solidified fluid become weird

[asimofu_ok]

Sorry to bother you again.
Is there a way to apply the velocity field to a solidified liquid using a script?
Due to my lack of knowledge about bursts, I was unable to determine what causes the velocity field.

UV seems to be generated from FlowmapAdvect in the shader graph, but the velocity there does not seem to be related to the velocity field.