Request: Widget ID or class with post ID

When inserting a block as a widget, the widget container gets an ID like ‘ls_content_block-3’ but the number changes when the same block is inserted in a different sidebar. It would be helpful if that number was the post ID of the block, or if an additional class was inserted on the container like ‘ls_block_id_2933’ to allow consistent styling of a block no matter where it gets inserted. Thanks!