Kerbal Space Program

I believe I have found a bug where the burn time using the Puff monoprop thruster. If the only form of propulsion is the Puff monopropellant thruster is available and a maneuver node is set, the estimated time instantly goes to a constant value (different for different ships, but does not change with the ∆V of the maneuver) and the indicator for insufficient fuel is shown. If both Puff and another thruster is present, the ∆V from the Puff is ignored. Happens on crewed and robotic craft. All tests done without cheats and in sandbox mode.

How to reproduce:

• Have a spacecraft with Puff thrusters and sufficient fuel
• Plan an maneuver node with non-zero ∆V required.

Notes:
Happened on a fresh install with no mods (save file, four craft files, and a screen shot with each craft attached) as well as on install with Making History expansion

• Observed with and without the advanced staging indicator
• Observed with different kinds of tanks, numbers of thrusters, and with fuel lines and the presence or absence of liquid fuel
• Appears object independent in orbit around Kerbal.

(Also, there is a great deal of spacecraft wobble when using Puff engines under stock configuration, but that may be a feature.)