I am not using XWayland. Is scaling about font size? But if i comment the line `(add-to-list 'default-frame-alist '(font . "Sarasa Mono CL 12"))`, it also occurs. ------------------ 原始邮件 ------------------ 发件人: "Robert Pluim"; 发送时间: 2018年6月7日(星期四) 晚上11:15 收件人: "刘力铭"; 抄送: "31745"<31745@debbugs.gnu.org>; 主题: Re: 回复: bug#31745: Frame's bug whenwindow-system [please keep the bug address in CC] "刘力铭" writes: > This not happen when running `emacs -Q -l .emacs`. > > > Add then, i tried to comment different regions in my configuration > file, and found it seems that only if i comment both `(require > 'em-tramp)` and line 239-241 which confige mode line's theme, this bug > will not happen. And if i uncomment either of them, the bug will > occur. `(require 'em-tramp)` triggers it more offen than the latter. Interesting. I donʼt see anything obvious in em-tramp that would cause this, but that doesnʼt matter, because 'emacs -q' does this here for me on Fedora 28, but only when I have scaling turned on. Are you running XWayland by any chance? Do you have scaling enabled? Thanks Robert