This is an odd one. I'm running Windows server 184.108.40.206 and Synology Emby Server 220.127.116.11. Both have the same issue.
The .nfo file was generated using Tiny Media Manager. I have deleted it and regenerated and it doesn't help.
If I manually edit the rating to 6.2, then refresh metadata, it displays fine; only 1 decimal place. Then I change it back to 6.1 and it goes to the 8 decimal places again. Looks to be specific to a rating of 6.1!
Edited by invader, 27 March 2020 - 07:37 PM.