Codesnipples on my installed plattform - piwik works however

Hi there, I’ve installed Piwik successfully weeks ago and assigned already accounts to my folks. Now I have time to ask, why in the Admin-face it shows strange code lines … see picutre. It seams to have something to do with the plugins. How may I get rid of those lines?

Thanks for your ideas, Nicole

This bug was fixed earlier. Please update to the latest Piwik release.