Werk #19173: Fix dropdown width in global settings page on Firefox

Component	Setup
Title	Fix dropdown width in global settings page on Firefox
Date	Mar 27, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.6.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.5.0b3 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

The dropdown field of various global settings were truncated too early when using Firefox. We now display these dropdowns the same width across all browsers.

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