I've run into an issue where some objects placed on the map somehow corrupt. They are visible but do not exactly exist
They seem count negatively on the object count number and can effectively deleted only by delete+erase from hdd the object layer and seem to completely mess up the map.
It happens to like 1 in 1000 objects placed.
When selecting all the same type objects that are placed on the same layer and trying to delete them the corrupted objects cause this error message:
Error: Selection error - Created selection has objects from more than one layer!
Corrupted objects can be selected one by one, but delete does not seem to properly remove them and only erasing the layer seems to work although sometimes the layer erase crashes TB. {F24445} {F24446} {F24447} {F24448} {F24449}