Scrollbars are ugly. I’m on Linux, but they still use the Windows-style no other (Electron or other) app on my PC has scrollbars like this.
You could add some CSS to theme them, make them follow the system theme and I’d like to see a setting to disable them.
Here’s my window with the ugly scrollbars.
System info: Operating System: KDE neon 5.24 (focal) KDE Plasma Version: 5.24.1 Qt Version: 5.15.3 Kernel Version: 5.11.0-25-generic (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-3770 CPU @ 3.40GHz Memory: 27.1 GiB of RAM