Merge pull request #12617 from keymanapp/fix/linux/cherry-pick/12587_…

…webkit

fix(linux): set environment variable for rendering of downloads dialog 🍒 🏠

linux/keyman-config/km-config

@@ -2,6 +2,7 @@
 
 import argparse
 import logging
+import os
 import sys
 import gi
 
@@ -66,6 +67,10 @@ if __name__ == '__main__':
     elif args.url:
         download_and_install_package(args.url)
     else:
+        # Workaround for bug in webkit2gtk (#12587)
+        if not 'WEBKIT_DISABLE_DMABUF_RENDERER' in os.environ:
+            os.environ['WEBKIT_DISABLE_DMABUF_RENDERER'] = '1'
+
         w = ViewInstalledWindow()
         try:
             w.run()