generate quantities method always reports completion of chains in 0s

[mike-lawrence]

Not a big deal, but thought it worth reporting. When running the generate quantities method, compute indeed takes time but the printed progress always reports completion in 0.0s:

Running standalone generated quantities after 6 MCMC chains, 1 chain at a time ...

Chain 1 finished in 0.0 seconds.
Chain 2 finished in 0.0 seconds.
Chain 3 finished in 0.0 seconds.
Chain 4 finished in 0.0 seconds.
Chain 5 finished in 0.0 seconds.
Chain 6 finished in 0.0 seconds.

All 6 chains finished successfully.
Mean chain execution time: 0.0 seconds.
Total execution time: 106.2 seconds.

Current Version:

v2.35.0