[BUG] Headers are not added in responses

[bflorat]

BUG
I set a response-change header :

On any call (initialized from XHR or a static resource GET), this header is absent from the response headers ad displayed in F12 / Network.

规则和测试地址
请提供规则内容和测试地址。

附加信息
Firefox 115.7.0esr (64-bit) Linux

Notes:

• requests headers work as expected
• I tested other extensions and I had the same problem, is it a firefox restriction in last versions ? It worked last year with ModHeaders in all cases.
• it seems that the response header name is lowered (I typed 'FF_...' but it is saved as 'ff_....'). I can't test this because of the absence of the header in the response but if it is actually in lower case, it would cause us issues.

Thanks, KUTGW

[huelsgp27]

same problem.