I bought a rename token last night, clicked on the pencil to rename my Firebolt, realized "Oh, I'd better make sure I spell this right" and tabbed over to look at the name I wanted to use. Tabbed back, and the rename token had been consumed. I had not started typing a name, so the ship name was still simply "Firebolt". I tried to click on the pencil again, and it told me I needed another 100 credits to rename it. I bought a second rename token and confirmed that this was able to let me rename the ship. I play in full screen, so the game window disappears when I tab out of it. Maybe this triggered it? Or maybe it was the focus change? In either case, I'd expect the token to only be consumed if the name changes.