Comment 34 for bug 1825741

Samuel Mehrbrodt committed a patch related to this issue.
It has been pushed to "libreoffice-6-2":

https://git.libreoffice.org/core/commit/fd95a92d600b751ad6a23f35db446bf063cb722b

tdf#124391 Fix doubled menu in global menu

It will be available in 6.2.9.

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.