Warning dialog is shown differently according to platform

Warning dialog which shows a warning when VDB contains udf shows differently on different platform. On linux it looks fine (warningLinux.png) but

• on Windows, the message is in the one line. (probably issue with line separator on Win) (warningWin.png)
• on Mac, the wizard is not extended and only first line can be seen (warningMac.png). So the user is not able to see whole message on the Mac.