We have a few examples of uploads being dropped before processing. There are a couple of potential causes of this, and there are a few processing constants we can tweak to improve things.
<rdar://problem/58146698>
Created attachment 386881 [details] Patch
rs=me
Created attachment 386896 [details] Patch for landing
Comment on attachment 386896 [details] Patch for landing Clearing flags on attachment: 386896 Committed r254100: <https://trac.webkit.org/changeset/254100>
All reviewed patches have been landed. Closing bug.