The baseline is shorter than the new snapshot (1200x851 to 1200x852).
Baseline History
Build 1170978edb4 current baseline
Current build. Auto-accepted
Build 1170978edb4
Inherited baseline identical to build 733
Build 73369527e5
Accepted by Anna Beddow.
Build 663632e3e0
Auto-accepted
Build 1d4223c6
Auto-accepted
Commenting is disabled because there's a newer build on this branch