This may be related to Compatibility View settings on Internet Explorer. Please try removing Kintera.com and Kintera.org from Compatibility View settings through the following steps:
  1. Click the Tools menu on your browser (you can access this by pressing Alt+T on your keyboard if you do not see Tools)
  2. Click on Compatibility View settings
  3. Remove entries for Kintera.com and Kintera.org

Once complete, reload the page and see if the issue persists. If the problem continues, Chat with Support and reference this article.