Translucent residue on top of bread

Anyone know what this is please? I few minutes of web searching didn’t give me a good answer.

Thanks.

Got a picture?

(post deleted by author)

Thanks

look a lot like flour ‘lumps’ that have been clung&expanded by oven spring . . .

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I believe that is Starch that was wet before the Loaves were baked.
That looks like it was a VERY hydrated Dough.