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Fixes #1332.
To make a long story short... we use
react-dd-menu
for the Topbar menus, and it leans on CSSTransitionGroup for animations. Historically that's been available as an addon in React's core, but those addons are being moved out of the core and into their own packages. However, as React's developers have noted, these addon packages need their own copy of React.This worked while all Editor components were under one bundle, but broke when we split off the Standalone preset. The implementation of these React addons resulted in a situation in which everything except the addons were respecting the Webpack configuration to get their React from
window.React
.See facebook/react#7874 for another instance of this problem.
Fixed this by pulling in the one component we were using from
react-dd-menu
, and swapping out thereact-addons-css-transition-group
package for the less finickyreact-transition-group/CSSTransitionGroup
drop-in replacement.