SmartyPants : Left and right double quotation mark

Hello,
I’m using smartypants with that configuration.

 'smartypants' => [
        'doublequote.open'           => '«',
        'doublequote.close'          => '»',
        'doublequote.low'            => '„',
        'singlequote.open'           => '«',
        'singlequote.close'          => '»',
        'backtick.doublequote.open'  => 'BBB', //testing
        'backtick.doublequote.close' => 'AAA', //testing

    ],

"Distracted Body"
“Distracted Body”,

This sample is reformated to

«Distracted Body»
“Distracted Body”,

But should be

«Distracted Body»
«Distracted Body»,

regarding my configuration, right?

But the Left and right double quotation mark is not reformated…

Is this something related to kirby, or maybe to smartypants? Although it seems to be working in the smartypants documentation… ?

This seems to be related to Replace German quotation marks („ … “) with smartypants? - #3 by JoSch but maybe it has changed a bit since K4 ?

Thanks a lot.

Have you tried a solution similar to Replace German quotation marks („ … “) with smartypants? - #4 by lukasbestle ?

I think it’s still true for Smartypants:

SmartyPants only replaces plain ASCII quotes to the configured format, but it cannot detect other types of quotes.