Problems with horizontal scroll in calc/spreadsheet-mode

Hi! For me the horizontal scrolling is really buggy. When I scroll left it goes really fast and when I scroll into the right direction it is way slower and often even jumps back leftwards.
I am using manjaro i3 and have a laptop using libinput drivers for two finger scrolling. I do not have a mouse with me right now, but I could test, what happens when using horizontal scroll of my logitech mouse tonight if thats important.

 ➜  ~ inxi -F
  Host: tBook Kernel: 4.19.36-1-MANJARO x86_64 bits: 64 
  Desktop: KDE Plasma ERR-101 Distro: Manjaro Linux 
  Type: Laptop System: Apple product: MacBookPro10,2 v: 1.0 
  serial: <root required> 
  Mobo: Apple model: Mac-AFD8A9D944EA4843 v: MacBookPro10,2 
  serial: <root required> UEFI: Apple v: 
  date: 09/17/2018 
  ID-1: BAT0 charge: 68.9 Wh condition: 69.0/73.9 Wh (93%) 
  Topology: Dual Core model: Intel Core i5-3210M bits: 64 
  type: MT MCP L2 cache: 3072 KiB 
  Speed: 2893 MHz min/max: 1200/3100 MHz Core speeds (MHz): 
  1: 2893 2: 2939 3: 2893 4: 3074 
  Device-1: Intel 3rd Gen Core processor Graphics driver: i915 
  v: kernel 
  Display: x11 server: X.Org 1.20.4 driver: intel 
  resolution: 1680x1050~60Hz, 1280x1024~60Hz 
  OpenGL: renderer: Mesa DRI Intel Ivybridge Mobile 
  v: 4.2 Mesa 19.0.3 
  Device-1: Intel 7 Series/C216 Family High Definition Audio 
  driver: snd_hda_intel 
  Sound Server: ALSA v: k4.19.36-1-MANJARO 
  Device-1: Broadcom and subsidiaries NetXtreme BCM57786 Gigabit 
  Ethernet PCIe 
  driver: N/A 
  Device-2: Broadcom and subsidiaries BCM4331 802.11a/b/g/n 
  driver: bcma-pci-bridge 
  IF-ID-1: wlp3s0b1 state: up mac: 20:c9:d0:7b:39:41 
  Local Storage: total: 113.00 GiB used: 51.19 GiB (45.3%) 
  ID-1: /dev/sda vendor: Apple model: SSD SM128E size: 113.00 GiB 
  ID-1: / size: 101.77 GiB used: 50.81 GiB (49.9%) fs: ext4 
  dev: /dev/sda2 
  ID-2: swap-1 size: 8.80 GiB used: 383.9 MiB (4.3%) fs: swap 
  dev: /dev/sda3 
  System Temperatures: cpu: 77.0 C mobo: N/A 
  Fan Speeds (RPM): N/A 
  Processes: 221 Uptime: 15h 47m Memory: 7.67 GiB 
  used: 4.99 GiB (65.1%) Shell: zsh inxi: 3.0.33

Horizontal scrolling is dependent on the width of the left cell.

I did not change the width. It still has the default length. (But still it should not behave so wierdly.)

Maybe dirt on the mouse / pad.