i've installed the latest version 7.12. of elasticsearch on windows.
While trying out a multi search api call from my local live server with XHR i got the same problem that had already been reported here:
When Internet Explorer 11 does a call using HTTP Method "OPTIONS" with CORS-Headers,
elasticsearch answers with multiple headers instead of a comma separated list inside one Header. Internet Explorer denies the call due to CORS constraints.
The URL i use is:
May i post an issue on GitHub for that?!
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