Form not saving field updates

I have a form that is regularly losing changes when I update fields and submit. I have seen this in very rare instances in the same (SP 2013) farm, but this is happening about 40% of the time. I suspect that it might be related to a pause I have set up in the workflow tied to this list, but I have pauses in other workflows (on different sites, but same farm) that don't cause this behavior. Beyond that, I am pretty stumped. Just tried republishing the form and got the same thing happening.