Application menu popup varies with window decorations

Hi, I’ve installed multiple window decorations using pamac, since KDE store (Get new window decorations) has always been buggy for me. Two of these are lightly & materia. I’m currently using lightly with materia-dark global theme. Here are the info for those two packages:

materia-kde
$ pacman -Qi materia-kde
Name            : materia-kde
Version         : 20210410-1
Description     : Materia theme for KDE Plasma 5
Architecture    : any
URL             : https://github.com/PapirusDevelopmentTeam/materia-kde
Licenses        : GPL3
Groups          : None
Provides        : None
Depends On      : None
Optional Deps   : materia-gtk-theme: Matching GTK theme [installed]
                  kvantum-theme-materia: Materia theme for Kvantum Qt style (recommended) [installed]
Required By     : None
Optional For    : None
Conflicts With  : None
Replaces        : None
Installed Size  : 3.95 MiB
Packager        : Bruno Pagani <archange@archlinux.org>
Build Date      : Sat Apr 10 22:22:39 2021
Install Date    : Fri May 14 20:28:42 2021
Install Reason  : Explicitly installed
Install Script  : No
Validated By    : Signature
lightly-qt
Name            : lightly-qt
Version         : 0.4.1-1
Description     : A modern style for qt applications
Architecture    : x86_64
URL             : https://github.com/Luwx/Lightly
Licenses        : GPL
Groups          : None
Provides        : None
Depends On      : None
Optional Deps   : None
Required By     : None
Optional For    : None
Conflicts With  : lightly-git
Replaces        : None
Installed Size  : 1010.06 KiB
Packager        : Unknown Packager
Build Date      : Thu May 20 17:46:31 2021
Install Date    : Thu May 20 17:59:59 2021
Install Reason  : Explicitly installed
Install Script  : No
Validated By    : None

Here is my system info:

System info
$ inxi -Fxxxzm
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "",
        LC_ALL = (unset),
        LC_ADDRESS = "en_NZ.UTF-8",
        LC_NAME = "en_NZ.UTF-8",
        LC_MONETARY = "en_US.UTF-8",
        LC_PAPER = "en_NZ.UTF-8",
        LC_IDENTIFICATION = "en_NZ.UTF-8",
        LC_TELEPHONE = "en_NZ.UTF-8",
        LC_MEASUREMENT = "en_001.UTF-8",
        LC_TIME = "en_001.UTF-8",
        LC_COLLATE = "en_US.UTF-8",
        LC_NUMERIC = "en_US.UTF-8",
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").
System:    Kernel: 5.4.123-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0 Desktop: KDE Plasma 5.21.5 tk: Qt 5.15.2 
           wm: kwin_x11 vt: 1 dm: SDDM Distro: Manjaro Linux base: Arch Linux 
Machine:   Type: Laptop System: HP product: HP Laptop 14-bw0xx v: N/A serial: <filter> Chassis: type: 10 serial: <filter> 
           Mobo: HP model: 8324 v: 22.27 serial: <filter> UEFI: AMI v: F.28 date: 04/09/2019 
Battery:   ID-1: BAT0 charge: 29.0 Wh (91.2%) condition: 31.8/31.8 Wh (100.0%) volts: 16.1 min: 14.6 model: HP Primary 
           type: Li-ion serial: N/A status: Discharging cycles: 285 
Memory:    RAM: total: 3.29 GiB used: 1.9 GiB (57.8%) 
           RAM Report: permissions: Unable to run dmidecode. Root privileges required. 
CPU:       Info: Dual Core model: AMD E2-9000e RADEON R2 4 COMPUTE CORES 2C+2G bits: 64 type: MCP arch: Excavator rev: 0 
           cache: L2: 1024 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 5990 
           Speed: 1092 MHz min/max: 1100/1500 MHz boost: enabled Core speeds (MHz): 1: 1092 2: 1094 
Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] Stoney [Radeon R2/R3/R4/R5 Graphics] vendor: Hewlett-Packard 
           driver: amdgpu v: kernel bus-ID: 00:01.0 chip-ID: 1002:98e4 class-ID: 0300 
           Device-2: Sunplus Innovation HP TrueVision HD Camera type: USB driver: uvcvideo bus-ID: 3-1.3:3 chip-ID: 1bcf:2c9b 
           class-ID: 0e02 
           Display: x11 server: X.Org 1.20.11 compositor: kwin_x11 driver: loaded: amdgpu,ati unloaded: modesetting 
           alternate: fbdev,vesa s-res: 1366x768 s-dpi: 96 
           OpenGL: renderer: AMD STONEY (DRM 3.35.0 5.4.123-1-MANJARO LLVM 11.1.0) v: 4.5 Mesa 21.1.2 direct render: Yes 
Audio:     Device-1: Advanced Micro Devices [AMD/ATI] vendor: Hewlett-Packard driver: snd_hda_intel v: kernel bus-ID: 00:01.1 
           chip-ID: 1002:15b3 class-ID: 0403 
           Device-2: Advanced Micro Devices [AMD] Family 15h Audio vendor: Hewlett-Packard driver: snd_hda_intel v: kernel 
           bus-ID: 00:09.2 chip-ID: 1022:157a class-ID: 0403 
           Sound Server-1: ALSA v: k5.4.123-1-MANJARO running: yes 
           Sound Server-2: JACK v: 0.125.0 running: no 
           Sound Server-3: PulseAudio v: 14.2 running: yes 
           Sound Server-4: PipeWire v: 0.3.28 running: yes 
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Hewlett-Packard driver: r8168 
           v: 8.048.03-NAPI port: e000 bus-ID: 02:00.0 chip-ID: 10ec:8168 class-ID: 0200 
           IF: eno1 state: down mac: <filter> 
           Device-2: Intel Dual Band Wireless-AC 3168NGW [Stone Peak] driver: iwlwifi v: kernel port: e000 bus-ID: 03:00.0 
           chip-ID: 8086:24fb class-ID: 0280 
           IF: wlo1 state: up mac: <filter> 
           IF-ID-1: virbr0 state: down mac: <filter> 
Bluetooth: Device-1: Intel Wireless-AC 3168 Bluetooth type: USB driver: btusb v: 0.8 bus-ID: 3-1.4:4 chip-ID: 8087:0aa7 
           class-ID: e001 
           Report: rfkill ID: hci0 rfk-id: 1 state: down bt-service: enabled,running rfk-block: hardware: no software: yes 
           address: see --recommends 
Drives:    Local Storage: total: 465.76 GiB used: 97.64 GiB (21.0%) 
           ID-1: /dev/sda vendor: Western Digital model: WD5000LPCX-60VHAT0 size: 465.76 GiB speed: 6.0 Gb/s 
           rotation: 5400 rpm serial: <filter> rev: 1A01 scheme: GPT 
Partition: ID-1: / size: 31.37 GiB used: 20.39 GiB (65.0%) fs: ext4 dev: /dev/sda4 
           ID-2: /boot/efi size: 256 MiB used: 84.7 MiB (33.1%) fs: vfat dev: /dev/sda1 
           ID-3: /home size: 191.97 GiB used: 77.16 GiB (40.2%) fs: ext4 dev: /dev/sda5 
Swap:      ID-1: swap-1 type: partition size: 5 GiB used: 0 KiB (0.0%) priority: -2 dev: /dev/sda6 
Sensors:   System Temperatures: cpu: 33.8 C mobo: N/A gpu: amdgpu temp: 33.0 C 
           Fan Speeds (RPM): N/A 
Info:      Processes: 189 Uptime: 37m wakeups: 1 Init: systemd v: 247 Compilers: gcc: 11.1.0 clang: 11.1.0 Packages: 1604 
           pacman: 1586 flatpak: 18 Shell: Bash v: 5.1.8 running-in: yakuake inxi: 3.3.04 

Here’s my KDE Plasma info:
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2

And here’s my problem:
Issue: Application menu pops up somewhat away from application menu
Observed result: Application menu pops up somewhat away from application menu icon when I’m using materia-dark global theme with materia-dark window decorations. The distance is shown using a green line, which is absent in the 2nd pic.


Expected result: However, it pops just under the icon when I’m using materia-dark global theme with lightly window decorations. I want that to happen in materia-dark aurorae theme too.

What I’ve tried: Searching the internet gave me things like aurorae themes and kde plasma global menu, which do not solve my problem.
I hope my question is clear, English is not my 1st language. Thanks in advance.