In Arcade, we have conditional TFMs to build for net6.0 instead of net3.1 when building with DotNetBuildFromSource=true. However, these changes have failed to account for some places where the TFM is embedded into paths that need to be accessed during the build run - for instance,

. There was a change made in main to account for one instance of this: 9ffc76a but this hasn't been backported yet and should be expanded to most places the TFM is embedded in a path.