for loop over parameter expansion of array can miss resulted empty list

[Alexey]

Hello.

Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -g -O2 -fstack-protector-strong -Wformat 
-Werror=format-security -Wall
uname output: Linux alex 5.16.0-3-amd64 #1 SMP PREEMPT Debian 5.16.11-1 
(2022-02-25) x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 5.1
Patch Level: 16
Release Status: release

Description:
  If use 'Parameter Expansion', for example 'Remove matching suffix 
pattern', on array and try to iterate over expansion result with for 
loop, may occur that loop body will not be executed at all.

Repeat-By:
  Code: x=("/"); for i in "${x[@]%/}"; do echo "i is '$i'"; done
  Result: none
  Expected result: i is ''

Expected behavior:
  like for an array with empty element
  Code: x=(""); for i in "${x[@]}"; do echo "i is '$i'"; done
  Result: i is ''

  another example, show that problems occurs only with empty resulted 
list
  Code: x=("/" "//"); for i in "${x[@]%/}"; do echo "i is '$i'"; done
  Result: i is ''
          i is '/'


Regards,
Alexey