cannot validate read -e entry when bound to TAB

[of1]

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -g -O2 -fstack-protector-strong -Wformat 
-Werror=format-security -Wall
uname output: Linux debvirt 6.0.0-2-amd64 #1 SMP PREEMPT_DYNAMIC Debian 
6.0.5-1 (2022-10-28) x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 5.2
Patch Level: 2
Release Status: release

Description:
        When read -e is bound to tabulation
        i.e. bind -x '"\C-i": "function"'
        it is not possible to validate the entry after the first iteration.
        It is possible to validate by pressing Ctrl-j, but that is not 
a viable solution.
        I tried to bind 'RETURN: "\C-j"' but that does not work.
        It is not a new behavior in 5.2, but since then I used to work 
around this issue with
        read -set .001 -d '' DISCARD
        before the actual read -e
        Alas, this does not work anymore with 5.2 (-e and -t 
combination triggers shell exit or, when used in a script, prevents 
further use of read -e).
        Is there a solution to this problem? The return of the previous 
behavior of -e and -t combination would be fine for me although I don't 
understand why I need this.
        Below is an example to reproduce the problem.
        Thanks.

Repeat-By:
#!/usr/bin/env bash

_comp() {
   COMPREPLY=()
   local cur="${COMP_WORDS[COMP_CWORD]}"
   read -d '' -ra COMPREPLY < <(echo "$cur$RANDOM")
   return 0
}
f_complete() {
   declare COMPLETE COMP_LINE IFS=$' \t\n'
   declare -a COMP_WORDS
   declare -i COMP_CWORD COMP_POINT

   COMP_LINE="${PROGNAME:-dummy} $READLINE_LINE"
   COMP_POINT=${#COMP_LINE}
   read -d '' -ra COMP_WORDS <<<"$COMP_LINE"
   [[ "${COMP_LINE: -1}" == [[:blank:]] ]] && COMP_WORDS+=( "" )
   (( COMP_CWORD=${#COMP_WORDS[@]} - 1 ))

   _comp

   COMPLETE="${COMPREPLY[0]} "
   READLINE_LINE="${COMP_WORDS[*]:1:(( ${#COMP_WORDS[@]} - 2 ))} $COMPLETE"
   READLINE_LINE="${READLINE_LINE# }"
   READLINE_POINT="${#READLINE_LINE}"
   return 0
}
set -o emacs
bind -x '"\C-i": "f_complete"'

while true; do
   ### 'read -e -t' used to solve the issue but not anymore in Bash 5.2
   ### (at least 5.2.2(1)-release (x86_64-pc-linux-gnu))
   #read -set .001 -d '' DISCARD
   read -e -p "entry> " ENTRY   ### use TAB completion here
   sleep .2; echo "you typed $ENTRY"
done