Fields and Screens
Field configuration scheme
Our app use the “/rest/api/2/search?jql=issueKey” endpoint to synchronize the worklogs, with the fields “created,updated,worklog”.
Due to this, make sure that the “Log Work” field is present, and not hidden in the field configuration schemes.

Screens/Layouts
Make sure that the “Time tracking” field present on the Screens and Issue Layout in the projects.