I have put your two screenshots side by side, flipped, and zoomed in. See attached.
It appears there is no difference in the window decoration edges (although the different wallpaper colour behind makes them look different). There is definitely a change in the X button design that is now visible. ** Attachment added: "decor.png" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1727269/+attachment/4997372/+files/decor.png ** Changed in: gnome-shell (Ubuntu) Status: Incomplete => Triaged ** Also affects: ubuntu-themes (Ubuntu) Importance: Undecided Status: New ** Changed in: ubuntu-themes (Ubuntu) Importance: Undecided => Low ** Changed in: ubuntu-themes (Ubuntu) Status: New => Triaged -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1727269 Title: Window buttons and window edges are not rendered/designed cleanly - Ubuntu 17.10 Gnome To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1727269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs