What
The helper that loads and reads an artifact takes a new actorId option. When it is set, the helper does not reuse the result already loaded by that tool call's share probe (an earlier check of the artifact's sharing).
Why
In practice, a read made with actorId always loads the artifact fresh rather than using the earlier result.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say what `actorId` identifies or when it is passed.