http://bugzilla.opensuse.org/show_bug.cgi?id=1132954 http://bugzilla.opensuse.org/show_bug.cgi?id=1132954#c10 --- Comment #10 from Alexander Shchadilov <alexander.shchadilov@gmail.com> --- I can reproduce font shrinking in Thunderbird with Leap 15.2, however I found a workaround for it. For some reason fonts do not fit in rows of lists (account folders, letters), so increasing row height via css file improves the situation. Thunderbird interface can be tweaked with a userChrome.css file that does not exist by default. It should be created in ~/.thunderbird/<your-thunderbird-profile>/chrome/ where <your-thunderbird-profile> is a folder with an alphanumeric name generated by Thunderbird. Code to put into userChrome.css: treechildren::-moz-tree-row { margin-top: 2px !important; margin-bottom: 2px !important; } treechildren::-moz-tree-row(selected) { margin-top: 0px !important; margin-bottom: 0px !important; } As for tincts, I believe that you noticed a sub-pixel anti-aliasing and it is completely irrelevant to this Thunderbird behaviour. You should be able to change font rendering to grayscale in XFCE settings (Appearance, Fonts, set Sub-pixel order to "None"). -- You are receiving this mail because: You are on the CC list for the bug.