Multi certificate support returns Letsencrypt Intermediate Certificate twice

[mastercan]

Hello folks,

I have the following setup:
Nginx 1.11.0
Libressl 2.3.4

1 Letsencrypt RSA 2048 certificate
1 Letsencrypt ECDSA p256 certificate

The certificate files are both chained. Both have the Letsencrypt RSA 2048
X3 intermediate certificate at the end of the file.

The problem is:
Nginx returns this intermediate certificate twice when connecting via https.
Regardless whether you connect via RSA client or ECDSA client.

Is this a bug? Or a configuration issue?

Thank you in advance!

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,267240,267240#msg-267240