[BUG] Bad gateway (502) when using GET request with Body when using Refit 6 in Azure

[LarsCelie]

Describe the bug

A GET request with a [Body] results in a bad gateway when the API is hosted in Azure on Refit 6.

Steps To Reproduce
Host API with GET request with [body] on a Azure App Service
Call this API with Refit 6

Expected behavior
A 200 response OK status.

Environment

• OS: Azure App Service
• Device: Not relevant
• Version: Refit 6.3.2
• Working Version: Refit 5.2.4

Additional context
The same solution with Refit 5 works fine. But this wasn't mentioned in the breaking changes section.
Using local development also works fine.
Using <RefitSettings.Buffered = true> will make it work