Arabic command chr (under line chr) is not connected as normall text

Hello,

Viewing words are not correct with many fonts. for command chr (ALT+_chr) word comming split-ed in almost fonts.

word comming like: مف ص ل
correct word like: مفصل

command chr is (ALT+ص)

in almost fonts. but working with little font OK.

common problem in kubuntu 21.10, 20.10 , 20.04, ...
in all applications
in all command buttons , menu lists, ...

long time many years. new users can not accepting system like that.

====================
see attached image
correct words are:
طبَق
ارفض
ألغ

in back panel أظهر
====================

Thank you

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: systemsettings 4:5.22.5-0ubuntu1
ProcVersionSignature: Ubuntu 5.13.0-19.19-generic 5.13.14
Uname: Linux 5.13.0-19-generic x86_64
ApportVersion: 2.20.11-0ubuntu70
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.465
CurrentDesktop: KDE
Date: Wed Oct 27 07:36:26 2021
ExecutablePath: /usr/bin/systemsettings5
LiveMediaBuild: Kubuntu 21.10 "Impish Indri" - Release amd64 (20211012)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ar_EG.UTF-8
 SHELL=/bin/bash
 LANGUAGE=
SourcePackage: systemsettings
UpgradeStatus: No upgrade log present (probably fresh install)