I spotted a game I was interested in, fired up GOG galaxy store, and looked for the store search function. The functoin had to be there. I could remember using it. After poking around a while I checked the web based site. Yup, there's the search function right where it should be. By then I had forgotten which game I wanted. Lost sale.

This isn't a complaint, just information feedback.

Just for future reference, on the left-hand side of the Galaxy client, above your installed games, is a search bar. If you enter a search term into the box, then click "Find [search term] in store", it will work the same as the search on the web site.