"none" Accidental introduces extra Offset in Chords

[arshiacont]

Normale behavior without a chord:

{[ \staff<1> \clef<"g2"> \stemsUp \acc( a#1/16) ], 
[ \staff<1>  \stemsDown  \acc<"none">( a#1/16) ]}

leading to:

Same but in a chord, where the renderer adds an extra space between the note and the accidental. It actually becomes nasty on a real score:

{[ \staff<1> \clef<"g2"> \stemsUp {\acc( a#1/16),  e2/16}  ], 
[ \staff<1>  \stemsDown  \acc<"none">( a#1/16) ]}

[arshiacont]

After testing: the real issue here is that a \acc<"none"> tag introduces an extra dx space where it should be treated as invisible of some sort. @dfober

[dfober]

fixed