Certain MSBuild configuration causes _wpftmp build output directories to not be deleted after each build #2930
Description
.NET Core 3.1.201
Windows 10 build 18363
Problem description:
Certain MSBuild configuration causes the compiler to leave behind directories with a _wpftmp suffix after a build completes. The problem seems to be related to custom <BaseOutputPath>s.
Actual behavior:
Temporary output directories are left behind after every build. A new directory is created per build.
Expected behavior:
Temporary output directories are deleted after every build.
Minimal repro:
