QA:QA

Build 1832 on grid-column-add-remove
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Baseline History
Build 1832fe31dcf
Current build. There are unaccepted changes, so build 1819 is still the baseline.
Build 1687dbeee30
Accepted by Liberty Curtis.
Build 1670d5d2a0e
Auto-accepted
Build 1662a428d11
Accepted by Josh Wooding.
Commenting is disabled because there's a newer build on this branch