It is something that has always been criticized by my users in dolphin and that relates to research, specifically the return to the results of research.
The research in general has been much improved here, but with regard to the return to the retreats of the initial research is worse than in dolphin because simply impossible with una.
I explain myself with an example. Looking for a list of users between 25 and 35 years old with photos.
You run the search, so far ok. Then you visit a profile from the results, and then you want to go back to the search to visit another one.
nothing is planned, so instinsctively you use the return key of your browser, and there, page expired. You click a second time, and there, the results of the initial search are gone.
I do not know what is the right solution, but it is a point not to neglect otherwise a good search engine is useless