Windows Vista?

The System Requirements page:
https://www.libreoffice.org/get-help/system-requirements/
Says: Windows 7 SP1, Windows 8, Windows Server 2012, or Windows 10

I don't have access to VM running Vista at the moment. Is anyone here
running LO 6.x on a Vista machine?

I have a client who would like to run LO on Vista. Should I advise them
to go with AOO instead?

Regards
Dave

Advise them to move to Windows 10.  Even Windows 7 is pretty much out of support now, which means they don't even get security updates.