In the Collaboration Hub : there is a format issue in the preview panel (right side) for the description of the selected element. The format is not applied : bold, italic, etc.
This is a known issue and has already been forwarded to our developers to get this fixed. If you are affected by this issue and want to be kept up to date about this issue, please create a ticket in the SAP Support Launchpad and reference the ticket number SPM-5476.
KBA , BPI-SIG-PM-DIC , Dictionary for SAP Signavio Process Manager , Known Error