QA:QA Backwards Compat

Build 1853 on grid-column-add-remove
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Baseline History
Build 185348e3307
Current build. There are unaccepted changes, so build 1744 is still the baseline.
Build 17262f396fd
Accepted by Josh Wooding.
Build 1670d5d2a0e
Auto-accepted
Build 165159e82b4
Accepted by Liberty Curtis.
Commenting is disabled because there's a newer build on this branch