Questions about loss of layoutlmv3 when finetuning on custom datasets

[Supercarry-khr]

Hi, thanks for your excellent work!
I add some other documents and their annotations into publaynet to create a new custom dataset. I try finetuning Layoutlmv3 on it.
But these other documents only have bbox annotations but lack of segmentation(polygon) information.
I wonder if it matters,
And I wonder whether bbox loss and polygon loss will be added together or work independently.