https://social.mikutter.hachune.net/@mok/116208294430782702
BunnyCDN intentionally mis-writes any Mastodon request signing, as to make it incompatible with Mastodon.
And, they confirmed it's intentional.
The user sent in a help ticket, and Bunny confirmed this response rewrite was intentional and would not fix it.
I wanted to get this out, not to conjecture as to why.