Werk #19601: Fix error after failed bulk change on BI rules plus reload

Component

Title

Fix error after failed bulk change on BI rules plus reload

Date

Jun 1, 2026

Level

Trivial Change

Class

Bug Fix

Compatibility

Compatible - no manual interaction needed

Checkmk versions & editions

3.0.0b1 Not yet released	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.5.0p6	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT
2.4.0p32	Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

When attempting to delete multiple rules for the BI default pack, and then refreshing, an error saying 'The parameter "mode" is missing.' appears. Before that, a more meaningful error saying You cannot delete this rule: it is still used by other rules. is shown.

This change fixes the 'parameter "mode" is missing' error, which is caused by an URL that doesn't contain any wato mode. Refreshing now keeps the current page visible, keeping the current mode as-is.

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