Certain objects which are on the map by default, I'll list a few examples:
Land_BC_Basket_F
Land_BC_Court_F
will not return any object ID if they're being looked for by
nearEntities
nearestBuilding
nearestObject
nearestObjects
nearObjects
If you add them by custom in your own mission, the scripts will ALWAYS return an ID though.
This must mean, that there is some kind of bug or misconfiguration causing, that you won't find the static/default ones.
{F24074}
Make a simple editor mission, add an init.sqf into the mission folder with the following line:
player addAction ["<t color='#0055FF'>Search</t>", "searchobject.sqf"];
Then, add the attached file "searchobject.sqf" in the same directory, load the mission again and preview the mission.
Scroll your mousewheel, press middlemouse/spacebar to run the script while you're in 50 meters range of the object "Land_BC_Basket_F", an example screenshot of it can be found here:
https://community.bistudio.com/wikidata/images/b/b1/Arma3_CfgVehicles_Land_BC_Basket_F.jpg
One of the possible positions it can be found is in the coordinates: 036131
The script will tell you not found, except if you placed the object by yourself in the mission.
For some reason BI decided to disable the finding of many map objects using various commands. They claim it increases performance. In reality it reduces what we can do with our missions. I had a system to find wrecks on the map and create objectives around them. But that is no more now I have to place them myself which is absurd. Please BI bring back the option to find all objects on map.