"Fixed an issue that caused the 'Find nearest building' signal booster option to find only buildings of the same type as the nearest building." HG

That is enduser abuse, right there. Noooo, Hello Games, you take that back! That is a feature now, not a bug or issue. Say it is not so. Someone pass me a tissue. Baah! It made raiding harveter's actually enjoyable. Take one mission at space station, get a paudry sum of nanites, then proceed to rob the whole star system, systematically, one operation center after the other. As long as ya had the local dialect or language learned.

You misunderstand that I think. Up to now the booster with the first option chosen has always found only 1-landing pad buildings (small outposts) and nothing else as buildings, and if there wasn't such building the booster would look for distress sites.
All this is now corrected. If an Observatory or Transmission Tower for example is closer he will propose it too.
So, it adds more for the player and not less. At least that's how I understand it to work now, but I must yet see it in action.

When using booster always try this first option first because it won't cost you anything, the other more precise options will cost you 1 navigation module each time.

If the player places the signal booster within the boundaries of a particular structure the first option finds buildings of that same type. Not knowing what the boundaries actually are I have placed the signal booster somewhere between the actual building and the waypoint (AKA Point of Interest or the save point). That is how I rushed through upgrading the number of high capacity slots in my Exosuit and focused on Manufacturing Facilities and Operations Centres when there were a few of the new blueprints to be found.

Haven't had a reason to test this but locating the nearest building of the type that you are already at sounds like it will still work and one can always use Navigation Data [chips] to try to find some other type of structure. Just remember which frequency range matches the structure of interest. See https://nomanssky.gamepedia.com/Signal_Booster.