Thanks Chris. I haven't tested it yet, but I would imagine that bookworm is still suffering from this issue, since multipath-tools is at 0.9.4-3+deb12u1.
I totally understand removing this project, but feel free to consider making a patch such as this for users who are interested in the stable release. No worries if not - I'll look at patching this on the Ubuntu side since there's some clear desire for it even if the upstream project is dead. -Mitch