After the Feb update it seems like the game is showing undiscovered safehouses on the map. Finding these is one of the nice things with this game, explore the map. Showing them will not give users the same experience. I strongly recommend to hide them again.
I’m sure an option to hide undiscovered safehouses could be added down the line, thanks for the feedback. 
A game-option or at least a filter-option. Didn’t see one yet.
By the way,
If you found a photo with coordinates of an undiscovered safehouse, go there and unlock it, but later lose the safehouse again (by bug), there is no icon on the safehouse that shows that it’s undiscovered any more…
If the icon would reappear in this situation, it would be easier to find them all again when they finaly manage to solve this bug.
Or even better:
On startup / loading the world following could happen…
- Check: safehouse unlocked?
- Yes: activate safehouse icon and fast travel/respawn option.
- No: go to check 2
- Check: photo of the location already found?
- Yes: unlock safehouse, activate safehouse icon and fast travel/respawn option.
- No: go to check 3
- Check: photo of a nearby location already found (with coordinates of the safehouse on the back)
- Yes: activate “undiscovered safehouse” icon
- No: No icon at all.
This would heal the lost safehouses, at least if you went there and took the photos.