Change record status: 
Project: 
Introduced in branch: 
7.x
Introduced in version: 
7.90
Description: 

D7 now adds a "X-Content-Type-Options: nosniff" header to cached page responses which may not always have been the case previously depending on webserver configuration.

This could cause disruption in rare cases where a D7 site is outputting content such as JS or CSS via cached pages without setting the appropriate content type. The fix in such cases would be to set the content type properly on the response.

Impacts: 
Module developers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done