I've noticed that Real Player 11 plug-in incorrectly works with Safari/Webkit. After opening Safari and example page rendering Real Player 11 plug-in for the first time the plug-in runs without problem. But if you close that page and you open the page again or open other page containing the plug-in the plug-in fails to render in Safari. You have to restart browser as workaround for the bug, but it only works once.
The issue is only visible on Windows platform.
Steps to reproduce:
0) Install Real Player 11 for Windows from www.real.com.
1) Go to a page: http://www.mozilla.org/quality/browser/front-end/testcases/plugins/ra3.html
2) Close the page.
3) Open the page again or open other page like: http://www.mozilla.org/quality/browser/front-end/testcases/plugins/ra4.html
Real Player 11 plug-in should be rendered on the page.
Real Player 11 plug-in fails to render on the page.