I'm using the simplesearch plugin (v2.3.0) to create a filtered collection to be shown in a list, using children.html.twig. Theme used: Hypertext.
All worked fine with Grav 1.7.45. After upgrading to 1.7.46, it seems that the search result that is expected by children.html.twig in {% if search_results %} is empty, so it returns the full collection. Also, the search field isn't shown at the results page, which should be the case. There are no errors shown in the Grav log, nor in the Apache log.
I could narrow it down to upgrading Grav causing this phenomenon. No plugin update did cause any problem. Tried several times, in different sequences. Also reinstalled the simplesearch plugin.
I Did a compare at github: grav/compare/1.7.45...1.7.46. But I can't see any change between those versions that could have to do with this specific problem.
In which direction should I investigate further to find a cause?