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Werk #19359: Fix drag-and-drop reordering in sortable tables

Component Setup
Title Fix drag-and-drop reordering in sortable tables
Date Mar 16, 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
2.5.0b1
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT
2.4.0p25
Not yet released
Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Previously, reordering items via drag-and-drop in certain tables silently failed. The tag groups table on the Tag groups page was the most prominent case: dragging a tag group to a new position would trigger a "Changed order of tag groups" pending change, but the actual order remained unchanged.

The root cause was that these tables were sortable by column header (the default), which conflicts with manual drag-and-drop reordering. If you had ever clicked a column header to sort, that preference was persisted, and on every subsequent page load the rows were re-sorted — overriding any manual reorder you attempted. Worse, the mismatch between sorted display positions and internal data indices could silently corrupt the saved order.

This fix disables column sorting on tables that support drag-and-drop reordering: tag groups, alert handler rules, report content elements, and user connection lists.

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