I already fix same bug for EFL. (https://bugs.webkit.org/show_bug.cgi?id=43395) But There are same issue for GTK+.
Created attachment 70517 [details] Patch
Hey Ryuan, thanks for contributing this. I have a patch waiting for review which calculates systemFont from the GTK theme settings. Do you mind seeing if it fixes the issue as well? https://bugs.webkit.org/show_bug.cgi?id=47134
(In reply to comment #2) > Hey Ryuan, thanks for contributing this. I have a patch waiting for review which calculates systemFont from the GTK theme settings. Do you mind seeing if it fixes the issue as well? https://bugs.webkit.org/show_bug.cgi?id=47134 right, I tested and It's quite be better. *** This bug has been marked as a duplicate of bug 47134 ***