If used browser disables JavaScript, trying to open (local) help opens just a blank page. Steps: 1. in the default browser, disable JavaScript 2. Press F1 in LibreOffice (that uses HTML help). The browser will open empty page, with no hints to enable JavaScript. Ref: https://ask.libreoffice.org/en/question/249821/
Indeed Javascript is mandatory for the Help. Without Javascript it is impossible to play many functionalities of the pages (system and app switches, index, and many other internals).
Olivier Hallot committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/help/commit/abdad98a45ff66fd09422920d198c2d4f3cde8bc tdf#133928 Help need javascript enabled in browser
Olivier Hallot committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/core/commit/eb0d68a963d42e07d4b1572f6b6546ffb607e2c1 tdf#133928 Help need javascript enabled in browser It will be available in 7.1.0. 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.