Filestructure in tar.gz archives for electron release strange

Windows: lttmm-app-windows-latest-2.0.0.tar.gz\D:\a\ltt-mapmaker\ltt-mapmaker\lttmm-app-windows-latest-2.0.0.tar\.\

Ubuntu: lttmm-app-ubuntu-latest-2.0.0.tar.gz\lttmm-app-ubuntu-latest-2.0.0.tar\.\

macOS: lttmm-app-macos-latest-2.0.0.tar.gz\lttmm-app-macos-latest-2.0.0.tar\.\

Something's fudged.