I have a website, http://***.com/test, which has cookies. It doesn't work only after I visite another site, https://my.***.org. This site also writes out a cookie file. If I delete this cookie file, the site ***.com/test works fine.
It seems cookies from my.***.org is interfering with ***.com/test.

Does anyone have any clue why this is happening? These two sites have
different cookie names.

Thank you!