Hey Jack,
I see what you mean now. We've discussed this in the past on the forum.
With version 2.0.5 whenever you click on category it will zoom out to show you all available hotspots. So you browse around, zoom 10 times, then you want to see the hotspots in the area you currently in & then you get zoomed out, you have to repeat all the steps again to get to the place where you want.
Why does the map zoom in? Well the problem is -> your current zoom view area doesn't have any hotspots that have the word "badische" in them. So The server tries to search in a radius of 50km. It found 1 result and it also returned the coordinates. That is why the map zooms on the point. If you were searching for something in the area, then the map would not change the zoom.
Anyway - I understand your point. I know that it is confusing to the user. The whole search + category thing in version 2 & 3 has been confusing. That is why we've set to improve the things with version 4.
There the category selection works as filters. So you can search for any string, then you can limit the search to specific categories. That is something that people are used to - I think that there you'll be much more happy with the result.
In the mean time you'll have to live with the quirks of version 3
Regards,
Daniel