It can't be fixed in the same way the maxim deathloop can't be fixed. It's been present since WFA release, the same mechanic was implemented in the Valentine (without fixing) and the later removed from it.
Odd to incorporate in 1v1, but anything beyond that is a maphack due to the bug. But hey, most people don't use the minimap so it barely helps them (reason abilities like radio silence are barely used as well).
As mentioned before, I also think that reworking this unit to vet 1 Kubel ability would be the best fix and best balance change for IR HT.
50% more range than the vet 1 Kubel ability and also spotting vehicles.... then we could call it a day