Edit Conflict on Random Product Bundles

Hi all.

I am having an issue within Quotes where seemingly randomly products added to a bundle cannot be saved via in quote save (Blue tick).

The error from the logs are: Edit conflict - client TS is 2021-12-16T12:02:13+00:00, server TS is 2021-12-16T12:02:23+00:00. However only some of the Bundles per Quote are affected, not all which is the baffling part for me.

If I move the products out of the broken bundle and into a new one, it works fine. And if I edit the products via the products module it also works fine. So it's a tad confusing at the moment.

I've disabled all logic hooks I can and the issue remains. From the Console in Chrome I am getting:

rest/v11_8/ProductBundles/ee57efd4-5133-11ec-861b-00163e2e3fe7/link/products/f3e5e9b0-5133-11ec-a3f6-00163e2e3fe7?erased_fields=true 409 (Conflict)

Any ideas?

Thanks!