Workflow Editor - blank Workflow drawing canvas after checking out a workflow

[Dlam]

I have not been able to find an answer from previous posts and the KBs.

The user has the role of workflow_admin, workflow_creator, workflow publisher, activity_admin, and activity_creator.

The user can view and open the Published workflow. However, after clicking on the Workflow Actions context menu then select Checkout, the page turns blank. This happens to all other workflows when the user tries to checkout.

If I grant the admin role to the user, then yes the workflow is successfully checked out and activities can be opened.

This is not ideal so will appreciate any advice on ACL or roles associated.

[Tristan Elmore · Accepted solution]

We were encountering the same issue since about 1-2 months ago on our instance as well. I checked the same resources and wasn't able to find anything. We're on the latest patch of Washington DC and had upgraded Workflow Studio recently, so not sure if something around roles + permissions for workflows changed or not.

This ended up being the fix in my case: there was a write ACL on the wf_workflow table that was evaluating to false for users without the admin role and users with workflow_admin, workflow_creator, and workflow_publisher were getting a blank workflow canvas exactly like your screenshot.

I included a screenshot of the security rule debugging session I did—prior to implementing a fix—as well as the newly added ACL on the wf_workflow table that fixed it (allow write for users with any of those three roles). You may have to run your own security rule debugging session depending on how the ACLs look on workflow and its related tables on your instance(s).

Hopefully that helps.

[Dlam]

Thanks @Tristan Elmore for sharing your insights. Yes it resolved the blank canvas issue for users with one of the workflow roles after I created a new ACL for write.