I would strongly recommend that the "+", and other maths symbols, do not
move when the "case" feature is applied. If a "-" is being used in text
with the feature applied, it's probably being used as a hyphen, not as a
maths symbol. "+", "<", ">", etc. however, are always maths symbols, and
should continue to correctly align with digits, not with "-", whether
the "case" feature is applied or not.
I would strongly recommend that the "+", and other maths symbols, do not
move when the "case" feature is applied. If a "-" is being used in text
with the feature applied, it's probably being used as a hyphen, not as a
maths symbol. "+", "<", ">", etc. however, are always maths symbols, and
should continue to correctly align with digits, not with "-", whether
the "case" feature is applied or not.
Dave