Ok finally getting to the bottom of all this. Basically I wasn't allowed to comment, so I made an answer politely letting the poster know that their answer
here was propagating an obvious typo in the AWS docs:
Code:
GET https://<YOUR DOMAIN NAME>/logout?
client_id=xxxxxxxxxxxx&
logout_uri=com.myclientapp://myclient/logout
The last line should be: logout_uri=https://myclientapp.com/myclient/logout
I guess I should have tried to edit their post instead, which I had no idea you could do. So instead of letting me know how to do it right, someone just deleted my answer and then put me in answer jail. They also didn't bother to fix the actual answer or try to understand what I was trying to say.
Note I did submit an edit, which may be accepted by the time you see it if you click the link.
At the same time I was trying to make a post in the AWS forums, but not allowed to do so for some unspecified # of hours - even though I've had an AWS account for months. So naturally I just moved on and forgot all about the issue. But it was legitimately confusing to me for a bit, backed up by SO validating the weird typo.