QA:Backwards Compat Grid

Build 641 on layer-layout-component
1200px
Reviewing disabled
The baseline is shorter than the new snapshot (950x536 to 950x543).
Baseline History
Build 6417d3138e
Current build. There are unaccepted changes, so build 624 is still the baseline.
Build 613ea80d88
Accepted by Zhihao Cui.
Build 584b6116c2
Accepted by Alina Visan.
Build 5582742588
Accepted by Zhihao Cui.
Commenting is disabled because there's a newer build on this branch