On Windows, using --help or --version command line switches doesn't produce its output in the same window it was put to, when there is an instance of LibreOffice already running.
It is similar to bug 40225, which was WFM'd possibly after https://git.libreoffice.org/core/+/dfbece50ebaeaf45ea3f016d911b5de7c878afc5. That commit had fixed only non-Windows case. For Windows, these parameters are still passed from the secondary soffice.bin process to the primary one using IPC, and are handled there (using a separate console in that case).
Mike Kaganski committed a patch related to this issue.
It has been pushed to "master":
tdf#121498: also process --help/--version before VCL init on Win
It will be available in 6.3.0.
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:
Affected users are encouraged to test the fix and report feedback.
A polite ping to Mike Kaganski:
Is this bug fixed? if so, could you please close it as RESOLVED FIXED ? Otherwise, Could you please explain what's missing?