litarvan lightdm theme apparently broken on Manjaro?

apparently the litarvan lightdm theme is not working on manjaro. I already mentioned this in the GitHub issue tracker in there GitHub https://github.com/Litarvan/lightdm-webkit-theme-litarvan/issues/89, where the maintainer of the package suggested that it might be an issue with manjaro as other lightdm themes (like the slick-greeter), do work.

System:    Host: andres-pc Kernel: 5.6.3-8-tkg-pds x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: KDE Plasma 5.18.4
           Distro: Manjaro Linux
Machine:   Type: Desktop System: Gigabyte product: X470 AORUS ULTRA GAMING v: N/A serial: <root required>
           Mobo: Gigabyte model: X470 AORUS ULTRA GAMING-CF v: x.x serial: <root required> UEFI: American Megatrends v: F50
           date: 11/27/2019
CPU:       Topology: 8-Core model: AMD Ryzen 7 2700X bits: 64 type: MT MCP arch: Zen+ rev: 2 L2 cache: 4096 KiB
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 117838
           Speed: 3815 MHz min/max: 2200/3600 MHz Core speeds (MHz): 1: 2236 2: 2319 3: 2229 4: 2191 5: 2189 6: 2211 7: 2191
           8: 2481 9: 2245 10: 2199 11: 2208 12: 2179 13: 2214 14: 2623 15: 2218 16: 2433
Graphics:  Device-1: NVIDIA GP104 [GeForce GTX 1080] vendor: Gigabyte driver: nvidia v: 440.66.08 bus ID: 0a:00.0
           Display: x11 server: X.Org 1.20.8 driver: nvidia resolution: 3840x2160~60Hz
           OpenGL: renderer: GeForce GTX 1080/PCIe/SSE2 v: 4.6.0 NVIDIA 440.66.08 direct render: Yes
Audio:     Device-1: NVIDIA GP104 High Definition Audio vendor: Gigabyte driver: snd_hda_intel v: kernel bus ID: 0a:00.1
           Device-2: Advanced Micro Devices [AMD] Family 17h HD Audio vendor: Gigabyte driver: snd_hda_intel v: kernel
           bus ID: 0c:00.3
           Device-3: Logitech G933 Wireless Headset Dongle type: USB driver: hid-generic,snd-usb-audio,usbhid bus ID: 5-3:3
           Sound Server: ALSA v: k5.6.3-8-tkg-pds
Network:   Device-1: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel bus ID: 05:00.0
           IF: wlp5s0 state: down mac: 0a:fe:ca:02:0d:b8
           Device-2: Intel I211 Gigabit Network vendor: Gigabyte driver: igb v: 5.6.0-k port: f000 bus ID: 07:00.0
           IF: enp7s0 state: up speed: 1000 Mbps duplex: full mac: e0:d5:5e:a6:73:6a
           IF-ID-1: anbox0 state: down mac: da:ac:36:a7:cc:21
           IF-ID-2: virbr0 state: down mac: 52:54:00:f8:bb:81
           IF-ID-3: virbr0-nic state: down mac: 52:54:00:f8:bb:81
Drives:    Local Storage: total: 2.96 TiB used: 2.52 TiB (85.1%)
           ID-1: /dev/nvme0n1 vendor: Samsung model: SSD 970 EVO 250GB size: 232.89 GiB
           ID-2: /dev/nvme1n1 vendor: Samsung model: SSD 960 EVO 250GB size: 232.89 GiB
           ID-3: /dev/sda vendor: Seagate model: ST2000DX002-2DV164 size: 1.82 TiB
           ID-4: /dev/sdb vendor: Seagate model: ST1000DM010-2EP102 size: 931.51 GiB
Partition: ID-1: / size: 220.07 GiB used: 170.31 GiB (77.4%) fs: ext4 dev: /dev/nvme0n1p2
           ID-2: swap-1 size: 8.00 GiB used: 4.0 MiB (0.0%) fs: swap dev: /dev/nvme0n1p3
Sensors:   System Temperatures: cpu: 61.5 C mobo: 39.0 C gpu: nvidia temp: 50 C
           Fan Speeds (RPM): cpu: 686 fan-1: 824 fan-3: 818 fan-4: 0 fan-5: 0 gpu: nvidia fan: 21%
           Voltages: 12v: N/A 5v: N/A 3.3v: 3.31 vbat: 3.29
Info:      Processes: 536 Uptime: 17m Memory: 15.59 GiB used: 8.91 GiB (57.2%) Init: systemd Compilers: gcc: 9.3.0
           clang: 9.0.1 Shell: bash v: 5.0.16 inxi: 3.0.37

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