My question is a follow up to an answer to a related but different question https://stackoverflow.com/a/42633937/3175120.
I initially encountered the following error when i tried to set up an 'authorize/login' button on an html page.
idpiframe_initialization_failed", details: "Not a valid origin for the client: "MY DOMAIN" whitelist this origin for your project's client ID
I had no luck after going into my google API developer console to add the relevant domain under Authorized JavaScript origins to my existing credential.
After browsing around SO, I resorted to trying like the answer suggested to just create a new credential from scratch that includes the domains under authorized javascript origins upon creation. Doing so worked.
Now I don't understand why adding an authorized origin to an existing credential didn't work. Should it have worked? If not, I'd like to know why. But if I simply stumbled into buggy behavior, then perhaps validation here would be helpful so I could report the bug to google's cloud platform.
Per the screenshots below: my "addHerokuAfter" credential did not work, but the "whitelistfrombeginning" credential did. They look identical though. The only difference is that with the "addHerokuAfter" credential, I added the authorized origin in after creating it.
Here is a list of my credentials:
This is what the non-working credential looks like.
This is what the working credential looks like.
