Join:with some of the children empty

Build 450 on master
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The baseline is smaller than the new snapshot (1196x299 to 1210x335).
Baseline History
Build 450b70bff7 current baseline
Current build. Auto-accepted
Build 4480129882
Accepted by Kieran.
Build 109a7fb251
Accepted by Oksana.
Build 107f341790
Accepted by Oksana.
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