When viewing the KB articles in CSM portal, the description for some articles is not getting truncated correctly.
The CSM portal uses a default font size of 14 for the text and so the description may not get truncated correctly for all the records.
One possible resolution here is to clone the 'KB Category Page' widget and update the corresponding div section to use a custom font size for the description.
Create a new style sheet with the desired font size and attach it in the CSS Includes related list in theme record
Option 2 is portal specific as the CSS file attached is in the theme specific to the portal.