Hi,

The issue is caused by a translator plugin/code. Some attributes on the search shortcode JSON data getting translated, see here, which causes a major problem, as those are object attribute names, and those should never be changed. DOM element attributes should never be translated, except aria-labels or similar.

First, yes, you have a translator plugin: https://i.imgur.com/Yrqal1r.png
Second, after deactivation it works: https://i.imgur.com/pTSiViU.png
It is the cause of the issue. It conflicts with modules in the new release, it probably explains the issue with the previous version too. Unfortunately we can not prevent that, as it is making changes to the search output structure, which it should not do in the first place.