Selecting 'Instant Despatch' from an engine's menu while loading works fine (engine despatches instantly) until engine reaches the next industry when it instantly despatches again, travels for a single track length and disappears, only to reappear at the industry. This cycle continues over the industry waiting time and the engine is then released to continue its journey. It's as if the Instant Despatch command hasn't been fully cleared after its execution. Refreshing the game resolves the problem, no biggie just annoying, and a glitch is a glitch is a glitch.
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