System Information
Operating system: Linux-5.8.5-arch1-1-x86_64-with-glibc2.29 64 Bits
Graphics card: GeForce 940M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.66
Blender Version
Broken: version: 2.90.0, branch: makepkg (modified), commit date: 2020-08-31 11:26, hash: rB0330d1af29c0
Worked: 2.83
Short description of error
There are no add-ons available except for Cycles.
Exact steps for others to reproduce the error
I started up blender 2.90 for the first time after upgrading from 2.83. In the welcome splash screen I did not opt to load 2.83 settings. I went to Edit -> Preferences Add-ons in order to enable 3D Printing Toolbox. However, there were no add-ons there except fo the Cycles Render Engine. See the add-ons window screenshot.
