Try disabling dominos action sets
Not with Dominos, I usually suggest Masque to modify how buttons look.
That's my usual plan
Are both Dominos and Dominos_Config enabled? Dominos_Config is the bit that controls movement.
No, just disable stuff in the addons menu.
Does that character have an addon enabled that the others do not? Try just loading Dominos + Dominos_Config and see if it still happens.
Those should be available in the bar's right click menu
/dom numbuttons 15 is the command
Dominos doesn't control unit frames, so I'd check your other addons
This is intentiona, to offset issues with switching to the override bar in combat in certain encounters