[otrs] No newlines in ticket zoom

The content of the tickets is shown in only one line, but it is saved including linebreaks in the article-table. A similar case appears when creating a new ticket via the phone-view. Formatting the content with line breaks results in only one line. An example: <Begin> This is my new message <End> results in <Begin> This is my new message <End> Where is the problem? Is it sth. about rewriting of \n to <br>? Thanks in advance! Holger --