[itsme]

@Sciurius: thanks for chiming in
... almost ...

{start_of_verse: label='<span color="blue" weight="bold">B</span>'}
works in both 6.050 and in 6.060

{start_of_verse: label='<span color="blue" weight="bold">B'</span>'}
is ignored in both 6.060 and 6.050

{start_of_verse: label='<span color="blue" weight="bold">B''</span>'}
displayed with a B in 6.050 and as B'' in 6.060 instead of B'
       

is there an intended way to escape the single quote to have it displayed as a normal character?