I have an existing workflow in SharePoint Online that uses a drop-down list on the initiation form. In the past I have been able to modify the available choices with no problem, but currently if I add/remove/change one of the choices in the Initiation form parameters box and then re-publish the workflow, it does not show the changes on the WFInitForm when running the workflow.
Publishing appears to be successful as far as I can tell but if I close SPD and then re-open it, the Initiation form parameters have reverted back to the original values.
If I delete the WFInitForm.aspx file and re-publish, a new file is created but it keeps the original values. I've also tried adding a new field to the form but get the same result.
I've also been able to reproduce the issue on a different site collection with a brand new workflow.
Has anyone else experienced this or have any suggestions for me to try before contacting Microsoft?