If they are not scripted hotspots, then in the Details section > Compatibility Options, there is an option for showing hotspots on the bounding box.
If that is already turned off (or makes no difference) you may have to script one hotspot (HOTSPOT 0,0,0) as it should then only show that one scripted hotspot.
Versions 6.5 to 22
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision M6800 - i7 4700MQ @ 2.40GHz, 16GB RAM, AMD FirePro M6100 (2GB), Windows 7 64bit