Cropped cells in Knowledge Sessions table in Project editor

Description of problem:
Cell content is partially invisible. Visual glitch only.

Version-Release number of selected component (if applicable):
6.0.0 CR1

How reproducible:
-

Steps to Reproduce:
1. open Project editor, select Knowledge Base Settings section
2. scroll down to Knowledge Sessions table, add a session if the table is empty

Actual results:
Cell content is partially invisible.

Expected results:
Cell content should be completely visible.

Additional info: