While working with Business Process Flow in Dynamics 365, one of my colleague faced issue with “Next Stage” button. On clicking “Next Stage” on first stage, user is navigated to second stage but the second stage is not marked as Active. User is required to set it as active manually by clicking “Set Active” button.
Upon checking found that it is a known issue in Dynamics 365. Background workflows related to the entity on which the BPF is configured are causing the issue.
The issue is expected to get resolved by July 2017. For now as a workaround, we are required to deactivate all the workflows related to the entity for which BPF is configured and activate them again. Second workaround is to convert the background workflows to real time workflows.
Details are available at below community link.