Changes were applied to improve security. See ADV-2020-020, ADV-2020-021, ADV-2020-022, and ADV-2020-024 in Security Bulletins for more details.
Tableau Server 2019.1.5 is intermittently inaccessible and numerous "unable to create native thread" errors and failures to start tabprotosrv appears.
In Tableau Server 2018.3.3, guest user is unable to web edit published workbooks.
When Tableau Server is not set up for Google Big Query Oauth, clearing all saved credentials server-wide at /#/server/settings causes vizzes with GBQ embedded credentials to throw this error when viewed: "You are not authorized to perform this action".
In Tableau Server 2019.2.4, when refreshing a page built with JS API and trusted authentication and featuring multiple embedded views from the same tabbed workbook, the same session is used for all views.
Dashboard Load Times in Tableau Server 2019.3 are taking longer, when user locale is not en-US or Unspecified.
Unable to generate complete ziplogs. File lock by httpd prevented Ziplogs from gathering complete Access logs.
Running -tsm maintenance ziplogs sometimes failed with an error during the step "100% - Writing ziplogs archive to disk" and the resulting .zip file was missing files. For more information, see this KB.