We have a client using workflow, this is vanilla install no modifications, no other custom calls when saing or editing content. We keep getting the classic write lock error -333 but also now Save butons are occasionally not displaying / getting roemoe.
Are you on the latest version of v13 for both Umbraco and Workflow? The error is due to write locks on the content tree in the database - where are you hosting your instance and do you have any other tasks that may be holding locks?