Change record status: 
Project: 
Introduced in branch: 
8.x-2.x
Introduced in version: 
8.x-2.0-rc2
Description: 

The 1.x version of JSON:API made some incorrect assumptions with negative consequences, the 2.x version fixed this, but it now requires that in order to always get a application/vnd.api+json response, you need to specify Accept: application/vnd.api+json. This should have already been the case, but now even more so.

Impacts: 
Module developers
Themers