The Stealth belts for the P-40E-1 and F-82E have tracers in RB battles. If you try to see this in test flight it will have proper stealth belts but if you do a custom mission or join an RB battle you will have tracers.
I dont have a technical document to submit a bug report, but I’m pretty sure even Stevie Wonder can see something is wrong if stealth belts have tracers.