Thanks for making us aware of this, Ira.
This seems related to this issue that Nick posted about: Solar customers: Recognizing the "Daytime dip" and how it might impact your Sense numbers - #27 by BenAtSense.
As I said there: this is a known issue caused by miscalibrated solar CTs. The team is working to correct this and should have it fixed in the next couple of weeks without any action on your part. Sorry for the inconvenience!