[Webkit-unassigned] [Bug 201542] New: [FreeType] Scrambled fonts

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201542

            Bug ID: 201542
           Summary: [FreeType] Scrambled fonts
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKitGTK
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: peter.weber at mailbox.org
                CC: bugs-noreply at webkitgtk.org

Created attachment 378176

  --> https://bugs.webkit.org/attachment.cgi?id=378176&action=review

lufthansa.com

Hello!

Since Epiphany 3.32.x/WebKit2Gtk 2.24.x - maybe a later release - the fonts get sometimes scrambled in a tab, this means the renderer mixes randomly sans-serif, serif and monospace letters within single words inside a HTML container. It happens mostly after using one tab for a while, jumping forward and backward and moving between sites.

Steps to reproduce (fasted way I figured out):
1.) Open Epiphany  
2.) Open a tab  
3.) Open URL "lufthansa.com" and repeat until scrambled fonts appear: {
  3.1) Use search for random destinations and go always backward *Ctrl+←* // it should be enough to do this five to ten times
}

It that a possible memory corruption?
This happened on my own website with Lychee (marked affected area in red on screenshot), lufthansa.com (marked affected area in red on screenshot) and heise.de. It seems that always another container (div, span or paragraph) is affected. So don't expect that the problem shows up at the very same part of the website, which I marked in my screenshots.

I'm using a ThinkPad X220 (CPU: i7-2640M, GPU: HD3000) with Archlinux.
Thank you

Previously reported:
https://gitlab.gnome.org/GNOME/epiphany/issues/909#note_596855

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