Why does Window Selector 2.22.2 print some program names in bold face?

[Detlef Lechner]

Hello list,

Why does Window Selector 2.22.2 print some program names in bold face?
The boldly printed program names appear in the task switchers and
taskbars of all (4) workspaces. Once you have clicked on it, the
associated program window will open in the current workspace and the
name is no longer printed in bold.

Kind regards,
Detlef Lechner