Visually indicate that the dynamic actions are being processed (e.g. search)

Currently searching a listing (e.g. proposals listing) can take a while and there is no visual indicator that something is happening. This should be indicated to the user that they know they don't have to keep on repeating the search. As good ol' Nielsen put it in 1993: "For delays of more than 1 second, indicate to the user that the computer is working on the problem, for example by changing the shape of the cursor." - https://www.nngroup.com/articles/response-times-3-important-limits/