The PlaceBlock config action doesn't account for the possibility of there being no other blocks in the region

This bug is a Drupal CMS stable blocker, as @pameeela discovered in 📌 Add recipe for search backend Active .

Assigning to myself to squash it.

Pretty easy.

The change looks good and fixes the problem

Committed and pushed 43717fbb017 to 11.x and ae6dff1e0be to 11.1.x and 4c899033a94 to 10.5.x and 73c605991f2 to 10.4.x. Thanks!

longwave → closed merge request !10294

Automatically closed - issue fixed for 2 weeks with no activity.