In SQL Backup > server options > server view options > filter jobs display list by.

That filters by job description. Sadly, any job created with Redgate has NO description, and there is no way to alter the description with Redgate.

Jobs created with RedGate have "NULL" as the description. But the filter does NOT support nulls.

The filter is utterly useless.

Solutions:
a) filter by name instead.
b) or allow editing the job description.
c) or give support to NULL
d) or remove useless feature.