1. Insert > Fields > More Fields (Ctrl+F2), choose "Document" tab. 2. In "Format" column, "Style" should be "Template name" Reason: if the document is opened from a template, then this field displays the template name.
https://gerrit.libreoffice.org/c/core/+/108338
Seth Chaiklin committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/c14f98b924e97cfb469790f7c95c44291d4eed86 tdf#139295 improve label in Insert Fields dialog for type Templates It will be available in 7.2.0. The patch should be included in the daily builds available at https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: https://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.
You likely have checked everything. Thanks for the patch.