I suspect this is a themeing issue - they show as one star reviews in Ubuntu desktop 18.04 LTS.
** Attachment added: "Screenshot from 2018-05-03 10-31-14.png" https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1768603/+attachment/5132500/+files/Screenshot%20from%202018-05-03%2010-31-14.png ** Changed in: gnome-software (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/1768603 Title: All review score averages are 5 Stars - 1 Star reviews show as 5 Star Status in gnome-software package in Ubuntu: Incomplete Bug description: OS: Ubuntu Studio 18.04 Bionic Beaver (Comes with: DE - XFCE4 Version of application: 3.28.1-0ubuntu4) Looking in the Gnome Software application, all applications with any ratings show as 5-star. One-star reviews show as 5-star in the reviews section. An easy example to demonstrate this issue is to look at the entry for WINE. 5 Star Reviews (x24) 4 Star Reviews (x9) 3 Star Reviews (x5) 2 Star Reviews (x11) 1 Star Reviews (x45) Overall average - 5 Stars. Scrolling down to read individual reviews shows five stars for obviously negative reviews: (5 Star Rating) Title: Doesn't work (5 Star Rating) Title: Garbage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1768603/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp