Your certificate (or certificates) for the names listed below will expire in 10 days (on 02 Aug 16 16:14 +0000). Please make sure to renew your certificate before then, or visitors to your website will encounter errors.
I've seen several posts about this in the forums and reports that this issue has been resolved. However, it seems to still be occurring in some places, as I'm still seeing it.
Unless I’m missing something, this indeed seems like a bug. Both certificates have the exact same list of domains, so it should be considered renewed.
I have filed a bug in boulder (the CA software behind Let’s Encrypt):
The expiration mails are purely informational, there’s nothing that will happen just because the CA server (mistakenly) thinks your certificate is about to expire.
Other than possibly ignoring another mail on August 2nd (in case the bug happens again or isn’t fixed by then), there’s nothing you need to do.
That’s correct, the cert was renewed on the 1st of August (expiring 30th of October). However your server is still using the old one, did you remember to reload/restart it?