Having the same issue
Not only is lust not working whether via command pet / from actual pet bar / macro but sometimes the pet bars are just gone altogether….
Pet bars missing was a bug at the start of Manaforge Omega patch …. here we go again!!!
And nothing works, dismiss & resummon, relog, restart…none help
Mind you, restart is not even an option in M+
So many separate bug reports for the same issue …..don’t want to see another drawn out fix like Manaforge Omega pet bug