I just updated to Core Shell 5.1 on macOS 27, and when I open the main window, the search bar is greyed out like its disabled, when I try to type I get the Mac error bong sound.
The single feature I rely on most often is being able to just open that window and start searching, the fact that until now the search box automatically got focus was a real killer feature for me, and not only is that broken, but I can't search at all, and I have about 100 connections!