- <ShipHullId>572, <Role>Escort -> <EngineLimit>2 for 3 (!) engine-component-bays
- <ShipHullId>581, <Role>Escort -> <EngineLimit>2 for 3 (!) engine-component-bays
- <ShipHullId>582, <Role>Escort -> <EngineLimit>-1 for 3 (!) engine-component-bays
- <ShipHullId>576, <Role>ExplorationShipt -> <EngineLimit>-1 for 3 (!) engine-component-bays
- <ShipHullId>599, <Role>ExplorationShipt -> <EngineLimit>4 for 5 (!) engine-component-bays
- <ShipHullId>617, <Role>ExplorationShipt -> <EngineLimit>-1 for 5 (!) engine-component-bays
I'd guess that there are several more, but I haven't tested this further more. Those are only the ones I've come across, so far.

This not only makes it impossible to use their full engine-potential (in cases where the limit is below the number of given component-bays - see above), but also cripples them optically - like e.g.:
Heavy Escort - 2 engines
With 3 engines it would/will look like:
Heavy Escort - 3 engines
I also have reported the bugs to the Devs via the officially form, too, in order to include the needed fixes in a future update (whenever this will be).
