MHWD sets environment.syncPackageManagerDatabase to false even if no sync has taken place
This happens when mhwd installs video-modesetting as part of the nvidia+intel prime drivers. IMO this issue is critical since it was shipped in Manjaro 20.1 and prevents prime (nvidia+intel. amd+nvidia is fine) configs from being installed correctly on live systems.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information