[ksh93u+m] Interactive subshell expansion disfunctional

I recently replaced all original ksh93u+ by ksh93u+m, and meanwhile
noticed quite some deficiencies, things that worked in original ksh
but not any more in ksh93u+m.

The latest observation is that in interactive mode with 'set -o vi'
I was able to write a command substitution, say,

  ls $(date)

and with the cursor positioned (e.g.) at the closing parenthesis I
could expand the argument by Esc-* to obtain

  ls 2024\-05\-21

This does not seem to work in ksh93u+m. - Is there a chance to get
original ksh behavior back?

Thanks.

Janis