Some metrics are missing or invalid when using gzipped logs

[ingria]

For example, traffic and http version graphs are completely flatlined (since 21:00):

Request time graph became weird (now it has strange spikes):

I'm using the amplify log format like this:

access_log /var/log/nginx/access.log.gz amplify gzip;

Software:

• Amplify agent v1.8.0-1 from py3 repo
• Ubuntu 20.04
• nginx 1.18.0