Bilby jobs hanging on reconstructing the marginalized parameters

I've noticed a number of test jobs which get stuck after reconstructing the marginalized parameters, the logs look like this

08:42 bilby INFO    : Sampling time: 1:47:47.097487
08:42 bilby INFO    : Reconstructing marginalised parameters.
08:42 bilby INFO    : Using a pool with size 16 for nsamples=19747
11:54 bilby_pipe INFO    : Running bilby_pipe version: 1.0.5: (CLEAN) e9a68f9 2022-02-01 14:40:55 +0000
11:54 bilby_pipe INFO    : Running bilby: 1.1.5: release

The .out files show the tqdm progress bar getting to 100%, but then the job just seems to sit. This happens sporadically and, if you leave it long enough, it eventually completes. But, that is rather wasteful.