My ~/.config/zathura/zathurarc looks like this:

set adjust-open "width"
set window-height 800
set window-width 1200

Whenever I open a new pdf, I get a rendering error. When I open it again, it works but the set adjust-open "width" is not obeyed. I can set it to fit-width by pressign s though. The rendering error goes away if I comment out the line.

My system info is:

System:
  Kernel: 4.19.144-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
  Desktop: KDE Plasma 5.19.5 tk: Qt 5.15.0 wm: kwin_x11 dm: GDM, SDDM 
  Distro: Manjaro Linux 
Machine:
  Type: Laptop System: HP product: HP Pavilion Laptop 14-bf1xx 
  v: Type1ProductConfigId serial: <filter> Chassis: type: 10 
  serial: <filter> 
  Mobo: HP model: 83CE v: 59.38 serial: <filter> UEFI: Insyde v: F.31 
  date: 10/30/2017 
Battery:
  ID-1: BAT1 charge: 19.0 Wh condition: 21.3/42.1 Wh (51%) volts: 13.2/11.6 
  model: Hewlett-Packard PABAS0241231 serial: <filter> status: Charging 
CPU:
  Topology: Quad Core model: Intel Core i7-8550U bits: 64 type: MT MCP 
  arch: Kaby Lake rev: A L2 cache: 8192 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 31872 
  Speed: 800 MHz min/max: 400/1800 MHz Core speeds (MHz): 1: 800 2: 800 
  3: 800 4: 800 5: 800 6: 800 7: 800 8: 800 
Graphics:
  Device-1: Intel UHD Graphics 620 vendor: Hewlett-Packard driver: i915 
  v: kernel bus ID: 00:02.0 chip ID: 8086:5917 
  Device-2: NVIDIA GM108M [GeForce 940MX] vendor: Hewlett-Packard 
  driver: nvidia v: 430.64 bus ID: 01:00.0 chip ID: 10de:134d 
  Device-3: Chicony HP Wide Vision HD Camera type: USB driver: uvcvideo 
  bus ID: 1-5:3 chip ID: 04f2:b5d6 
  Display: x11 server: X.Org 1.20.8 compositor: kwin_x11 
  driver: modesetting,nvidia resolution: 1920x1080~60Hz s-dpi: 115 
  OpenGL: renderer: GeForce 940MX/PCIe/SSE2 v: 4.6.0 NVIDIA 430.64 
  direct render: Yes 
Audio:
  Device-1: Intel Sunrise Point-LP HD Audio vendor: Hewlett-Packard 
  driver: snd_hda_intel v: kernel bus ID: 00:1f.3 chip ID: 8086:9d71 
  Sound Server: ALSA v: k4.19.144-1-MANJARO 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Hewlett-Packard driver: r8168 v: 8.048.03-NAPI port: 3000 
  bus ID: 02:00.0 chip ID: 10ec:8168 
  IF: eno1 state: down mac: <filter> 
  Device-2: Intel Wireless 7265 driver: iwlwifi v: kernel port: 3000 
  bus ID: 03:00.0 chip ID: 8086:095a 
  IF: wlo1 state: up mac: <filter> 
Drives:
  Local Storage: total: 1.03 TiB used: 524.57 GiB (49.9%) 
  ID-1: /dev/sda vendor: Seagate model: ST1000LM035-1RK172 size: 931.51 GiB 
  speed: 6.0 Gb/s serial: <filter> 
  ID-2: /dev/sdb vendor: SanDisk model: SD8SN8U-128G-1006 size: 119.24 GiB 
  speed: 6.0 Gb/s serial: <filter> 
Partition:
  ID-1: / size: 48.72 GiB used: 35.22 GiB (72.3%) fs: ext4 dev: /dev/sdb5 
  ID-2: /home size: 59.67 GiB used: 34.87 GiB (58.4%) fs: ext4 
  dev: /dev/sdb2 
Swap:
  ID-1: swap-1 type: partition size: 8.10 GiB used: 2.02 GiB (25.0%) 
  priority: -2 dev: /dev/sdb3 
Sensors:
  System Temperatures: cpu: 55.0 C mobo: 29.8 C gpu: nvidia temp: 56 C 
  Fan Speeds (RPM): N/A 
Info:
  Processes: 335 Uptime: 2d 2m Memory: 7.71 GiB used: 4.15 GiB (53.9%) 
  Init: systemd v: 246 Compilers: gcc: 10.2.0 Packages: 1866 pacman: 1865 
  flatpak: 1 Shell: fish v: 3.1.2 running in: server inxi: 3.1.05