Komodo has weird graphical artifacts

These types of issues are often hard to troubleshoot and can usually be resolved simply by disabling hardware acceleration. To do this, follow these steps:

  1. Open a file (any file)
  2. Use browser preview (View > Browser Preview) to preview the file "in a browser" but set it to open in a Komodo tab
  3. Replace the file address with about:config to get into the settings
  4. Look for layers.acceleration.disabled and set it to true
  5. Restart Komodo

Alternatively if you cannot access Komodo's UI at all you can:

  1. Shut down Komodo
  2. Open the XRE/prefs.js file from your profile folder, create it if it does not already exist.
  3. Append the following at the end of the file: user_pref("layers.acceleration.disabled", true);
  4. Save and start Komodo