ProcessingPlugin fixes #391

Job	Run time
Test Processing	5m 51s
(linux/x64) Create Processing Build	6m 43s
(macos/aarch64) Create Processing Build	6m 7s
(windows/x64) Create Processing Build	7m 16s
(macos/x64) Create Processing Build	6m 16s
(linux/aarch64) Create Processing Build	5m 53s
	38m 6s

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