Werk #14338: Fix service level filter

Component User interface
Title Fix service level filter
Date Jun 22, 2022
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 2.0.0p27 2.1.0p4 2.2.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

The filter "Host service level" and "Service service level" returned wrong results.

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