We have a nintex workflow on a list in SharePoint on-premise environment. When we create 1st item on the day, workflow does not trigger at all but works for subsequent entries throughout the day.
It only happens with Nintex workflow and affects throughout the site on all workflows.However out of the box SharePoint workflows works fine.
Sometimes workflows also fails and error logged is "Failed to start workflow. The requested workflow task content type was not found on the SPWeb"
We tried to disable/enable a couple of features like Nintex workflow 2013 feature at site collection level.
We had a nintex workflow history list with 57000 items. So we tried creating a different Nintex Workflow History list and it also causes the same issue.