I added another screenshot that shows how to easily reproduce this issue using pango-view utility.
It also shows the difference in rendering between 16.04 and 18.04. ** Attachment added: "Screenshot demonstrating how to reproduce the issue with pango-view" https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/1783452/+attachment/5206604/+files/pango-view-example.png -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gtk+2.0 in Ubuntu. https://bugs.launchpad.net/bugs/1783452 Title: Some font glyphs are rendered incorrectly (with additional vertical spacing) in GTK applications Status in gtk+2.0 package in Ubuntu: New Bug description: After switching from 16.04 to 18.04 I noticed that fonts are now (in 18.04) rendered differently in GTK+ apps. For example, there is a vertical bar charcter `│` [U+2502](https://unicode-table.com/en/2502), that is used extensively to create solid vertical lines using just text characters. You can see it in console apps such as `mc` or `pstree`. While it is rendered correctly in Terminal in both 16.04 and 18.04, when rendered inside GTK apps it has unexpected vertical gap in-between characters on 18.04 (16.04 renders it correctly). The issue can be seen in GTK apps such as gVIM, Geany, GEdit, but Qt apps seem to render it properly. I have attached a screenshot that clearly demonstrates the difference. It shows brand new Ubuntu 16.04 on a left side where you can see vertical line in GEdit is completely solid, as it should be. On a right side it shows Ubuntu 18.04 where you can see line now has gaps that should not be there. I built a small GTK2 test app that reproduces the problem (sources at https://pastebin.com/WCH1ds4P), and using it I found that the problem occurs when libfreetype 2.8+ is used. I tested FreeType 2.6, 2.7, 2.7.1 and all of them work fine. While 2.8 and above has this gap. I am not 100% sure if this is an Ubuntu font configuration issue, or bug in FreeType, or GTK or some other Ubuntu components, but I hope someone at least can point me at the right direction. Please also check my post on AskUbuntu which has additional detail and screenshots: https://askubuntu.com/questions/1054779/incorrect-font- glyphs-rendering-in-gtk-applications-in-ubuntu-18-04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/1783452/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
