When playing with Generate New Races as NPRs "OFF" you cannot access the created race Tactical Map unless you restart the game.
Not sure if the following is afflicting also normal NPR generation, but the ship design of the NPRs is larger than the maximum displacement available at the Race Shipyards.
In my case: designs for 18,000 tons max Naval Yard Displacement 10,000 tons.
Eventually, while new ship designs are generated, there are no Ground troops templates available and have to be designed from scratch.
The function number: n/a
The complete error text: n/a
The window affected: Tactical Map
What you were doing at the time: Entered a new system and a New Race was generated. Being Generate New Races as NPRs "OFF" I was supposed to have had access to the new race map, but it was available on all screens but the tactical.
Conventional or TN start: TN
Random or Real Stars: Real Stars
Is your decimal separator a comma? No
Is the bug is easy to reproduce, intermittent, or a one-off? I would say easy. Create a new game with Generate New Races as NPRs "OFF", explore the universe until a race is generated.