If you drop the awkward "3/4" width and just have 0.5, 1, 1.5 char widths, then you could recover alignment by using U+2009 as the half-width space, maybe enter

If you drop the awkward "3/4" width and just have 0.5, 1, 1.5 char widths, then you could recover alignment by using U+2009 as the half-width space, maybe entered as Shift+space.