Avoid disposing current unique window #290

Job	Run time
Test Processing	3m 44s
(linux/aarch64) Create Processing Build	3m 35s
(windows/x64) Create Processing Build	8m 40s
(macos/aarch64) Create Processing Build	4m 22s
(macos/x64) Create Processing Build	5m 39s
(linux/x64) Create Processing Build	4m 8s
	30m 8s

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