"right Alt+Shift not switching back from Persian (Windows) to English in Cinnamon"

Distribution

Linux Mint 22 Wilma

Package version

Cinnamon 6.2.9

Graphics hardware in use

Onboard intel

Frequency

Always

Bug description

Issue:

When using the Persian (Windows) keyboard layout on Linux Mint with Cinnamon, the right Alt+Shift shortcut can switch the keyboard from English to Persian, but it does not switch back from Persian to English. The issue appears to be specific to the Persian (Windows) layout.
Steps to Reproduce:

Add the English (US) and Persian (Windows) keyboard layouts in the Cinnamon keyboard settings.
Set Alt+Shift as the shortcut to switch between layouts.
Attempt to toggle between the layouts:
    Press right Alt+Shift: switches to Persian (Windows).
    Press right Alt+Shift again: does not switch back to English (US)

Steps to reproduce

setxkbmap -print -verbose 10
Setting verbose level to 10
locale is C
Trying to load rules file ./rules/evdev...
Trying to load rules file /usr/share/X11/xkb/rules/evdev...
Success.
Applied rules from evdev:
rules: evdev
model: pc105
layout: us,ir
variant: ,winkeys
options: grp:win_space_toggle,terminate:ctrl_alt_bksp,grp:alt_shift_toggle
Trying to build keymap using the following components:
keycodes: evdev+aliases(qwerty)
types: complete
compat: complete
symbols: pc+us+ir(winkeys):2+inet(evdev)+terminate(ctrl_alt_bksp)+group(alt_shift_toggle)+group(win_space_toggle):1+group(win_space_toggle):2
geometry: pc(pc105)
xkb_keymap {
xkb_keycodes { include "evdev+aliases(qwerty)" };
xkb_types { include "complete" };
xkb_compat { include "complete" };
xkb_symbols { include "pc+us+ir(winkeys):2+inet(evdev)+terminate(ctrl_alt_bksp)+group(alt_shift_toggle)+group(win_space_toggle):1+group(win_space_toggle):2" };
xkb_geometry { include "pc(pc105)" };
};

sudo cat /etc/default/keyboard

KEYBOARD CONFIGURATION FILE

XKBMODEL="pc105"
XKBLAYOUT="us,ir"
XKBVARIANT=",pes_wins"
XKBOPTIONS="grp:alt_shift_toggle,grp:switch,terminate:ctrl_alt_bksp,grp_led:scroll"

BACKSPACE="guess"

Expected behavior

right and left Alt+Shift should toggle between English (US) and Persian (Windows) layouts without issue.

Additional information

No response

Reproduce the issue in Cinnamon keyboard settings with English (US) and Persian (Windows), using right Alt+Shift and the configuration shown in /etc/default/keyboard. Start by checking how Cinnamon applies the XKB layouts and grp:alt_shift_toggle option, then verify that the shortcut switches in both directions.