Assignment Tab Stuck on Loading During "Change Assignment" with Custom Role

Summary:

I have created a custom role for a Matrix Manager and granted all the necessary privileges to access and perform the Change Assignment action.
When the Change Assignment page was in the non-Redwood layout, it worked fine for the Matrix Manager.
However, after enabling the Redwood layout for Change Assignment, the Assignment tab is not opening and remains stuck on the loading screen.

PFA the screenshot for reference.

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