Dashboard with left aligned titles:
right click and inspect the title:
scroll through the elements on the right hand side until it highlights the title:
see there is no margin auto in the styling:
directly typing in the style centers the one title:
but you want this for all titles, so add a text panel like below:
and now all the panels have centered titles:
please note this is a workaround, and the css class names could change at anytime