'to-barline' doesn't stop glissando from crossing the barline.

Another problem (I know I can tackle it with a cadanza) that I think  
should have worked but didn't -- probably due to my lack of knowledge  
of lilypond -- is the following bar:

\version "2.24.1"

\new TabStaff \fixed c {
   \tabFullNotation
   \slurUp < f'-4\2 >8[ < f'-4\2 >16 ( < d'-1\2 >16 )]
   < c'-3\3 >8[  < d'-1\2 >8] (
   \once \override TabNoteHead.transparent = ##t
   < d'\3 >8 )
   \once \override Glissando.bound-details.to-barline = ##t
   < f'-4\2 >4. \glissando
   \hideNotes
     \grace < d'-4\3 >32
   \unHideNotes
}


I know, the \grace note extends into the next bar, but the directive  
to stop before the barline seems quite
clear to me. Any hints again? (I'm starting to feel quite silly now...)

harry