Werk #11605: Discovery page: Fix execution of active checks that are initially visible

Component	Setup
Title	Discovery page: Fix execution of active checks that are initially visible
Date	Nov 10, 2020
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.0.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

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