windowsNavigator JS ERROR: TypeError: this._workspacesViews[i] is undefined

Not critical but FYI.

The functionality works but I do get this error with journalctl -f and hitting the Super button, this error always shows:

Sep 12 19:22:03 mazinga-pc gnome-shell[1199]: JS ERROR: TypeError: this._workspacesViews[i] is undefined
                                              _updateWorkspacesFullGeometry@resource:///org/gnome/shell/ui/workspacesView.js:756:13
                                              setWorkspacesFullGeometry@resource:///org/gnome/shell/ui/workspacesView.js:746:14
                                              setWorkspacesFullGeometry@resource:///org/gnome/shell/ui/viewSelector.js:301:33
                                              _updateWorkspacesGeometry@resource:///org/gnome/shell/ui/overviewControls.js:498:27
                                              vfunc_allocate@resource:///org/gnome/shell/ui/overviewControls.js:402:14
                                              _computeWindowCenter@resource:///org/gnome/shell/ui/workspace.js:302:35
                                              _init@resource:///org/gnome/shell/ui/workspace.js:160:14
                                              _addWindowClone@resource:///org/gnome/shell/ui/workspace.js:1856:21
                                              _init@resource:///org/gnome/shell/ui/workspace.js:1174:22
                                              _init@/usr/share/gnome-shell/extensions/windowsNavigator@gnome-shell-extensions.gcampax.github.com/extension.js:47:15
                                              _updateWorkspaces@resource:///org/gnome/shell/ui/workspacesView.js:232:29
                                              _init@resource:///org/gnome/shell/ui/workspacesView.js:91:14
                                              _init@/usr/share/gnome-shell/extensions/windowsNavigator@gnome-shell-extensions.gcampax.github.com/extension.js:120:15
                                              _updateWorkspacesViews@resource:///org/gnome/shell/ui/workspacesView.js:682:24
                                              show@resource:///org/gnome/shell/ui/workspacesView.js:612:14
                                              show@resource:///org/gnome/shell/ui/viewSelector.js:276:33
                                              _animateVisible@resource:///org/gnome/shell/ui/overview.js:580:27
                                              show@resource:///org/gnome/shell/ui/overview.js:566:14
                                              toggle@resource:///org/gnome/shell/ui/overview.js:689:18
                                              _initializeUI/<@resource:///org/gnome/shell/ui/main.js:220:22

Here's my pc data:

 mazinga  ~  inxi -F
System:    Host: mazinga-pc Kernel: 5.8.6-1-MANJARO x86_64 bits: 64 Desktop: GNOME 3.36.6 Distro: Manjaro Linux 
Machine:   Type: Desktop Mobo: MSI model: Z97-G45 GAMING (MS-7821) v: 1.0 serial: <superuser/root required> 
           UEFI: American Megatrends v: 2.9 date: 02/16/2016 
CPU:       Topology: Quad Core model: Intel Core i5-4690K bits: 64 type: MCP L2 cache: 6144 KiB 
           Speed: 4500 MHz min/max: 800/4500 MHz Core speeds (MHz): 1: 4500 2: 4500 3: 4500 4: 4500 
Graphics:  Device-1: NVIDIA GM204 [GeForce GTX 970] driver: nvidia v: 450.66 
           Display: x11 server: X.org 1.20.8 driver: nvidia resolution: <xdpyinfo missing> 
           OpenGL: renderer: GeForce GTX 970/PCIe/SSE2 v: 4.6.0 NVIDIA 450.66 
Audio:     Device-1: Intel 9 Series Family HD Audio driver: snd_hda_intel 
           Device-2: NVIDIA GM204 High Definition Audio driver: snd_hda_intel 
           Device-3: Solid Year AWC113 type: USB driver: snd-usb-audio,uvcvideo 
           Sound Server: ALSA v: k5.8.6-1-MANJARO 
Network:   Device-1: Qualcomm Atheros Killer E220x Gigabit Ethernet driver: alx 
           IF: enp3s0 state: down mac: 44:8a:5b:9e:1e:a2 
           Device-2: D-Link DWA-171 type: USB driver: rtl8821cu 
           IF: wlp0s20u14 state: up mac: 18:0f:76:0a:b6:f0 
           IF-ID-1: docker0 state: down mac: 02:42:b4:ce:96:92 
Drives:    Local Storage: total: 2.96 TiB used: 821.94 GiB (27.2%) 
           ID-1: /dev/sda vendor: Seagate model: ST2000DM001-1CH164 size: 1.82 TiB 
           ID-2: /dev/sdb vendor: Samsung model: SSD 840 Series size: 232.89 GiB 
           ID-3: /dev/sdc type: USB vendor: Western Digital model: WD10JMVW-11AJGS3 size: 931.48 GiB 
Partition: ID-1: / size: 219.27 GiB used: 160.44 GiB (73.2%) fs: ext4 dev: /dev/dm-0 
Swap:      ID-1: swap-1 type: partition size: 8.80 GiB used: 4.0 MiB (0.0%) dev: /dev/dm-1 
Sensors:   System Temperatures: cpu: 63.5 C mobo: 44.0 C gpu: nvidia temp: 59 C 
           Fan Speeds (RPM): cpu: 877 fan-1: 0 fan-3: 1124 fan-4: 0 fan-5: 1058 gpu: nvidia fan: 35% 
Info:      Processes: 332 Uptime: 4h 17m Memory: 15.59 GiB used: 8.87 GiB (56.9%) Shell: Bash inxi: 3.1.05

gcampax / gnome-shell-extensions

windowsNavigator JS ERROR: TypeError: this._workspacesViews[i] is undefined #18