I also noticed that the Home and End keys behave differently in the new search as well.
In the old search (which I can still use in my local Plex Web v4.69.1 installation) Home and End position the cursor at beginning and end of the search box (behaving just like Google and Bing search engines).
However, when using the new search box (hosted version of Plex Web v4.74.1) pressing the Home and End keys highlights the first search result and Show More button respectively 
