Not possible to use custom AlloyEditor buttons created using React.createClass

• Type: Regression Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.1.X
• Fix Version/s: 7.0.0 DXP FP86, 7.0.10.12 DXP SP12, 7.0.X, 7.1.10 DXP FP14, 7.1.X
• Component/s: Alloy Editor
• Labels:
  • ee-ts
  • liferay-dxp-70-sp12
  • liferay-fixpack-de-86-7010
  • liferay-fixpack-dxp-14-7110
• Branch Version/s:
  7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Last Working Version:
  7.1.10 DXP FP11
• Git Pull Request: https://github.com/liferay/liferay-portal-ee/pull/15847

After the installation of fixpack-dxp-12 is not possible to use custom AlloyEditor buttons created using React.createClass.

Steps to reproduce

1. Create a new custom AlloyEditor button using React.createClass (you can see here some examples)
2. Start Liferay 7.1 - fixpack-dxp-11
3. Deploy your button and assert everything works as expected.
4. Stop the server. Install fixpack-dxp-12 (remember delete osgi/state folder )
5. Check whether the button is still working

Expected behavior
Button is still working

Actual behavior
Button is no longer working

Additional notes
This issue is caused by LPS-90079 which upgraded AlloyEditor from 1.5.23 to 2.0.0-alpha.2 and moving the buttons away from portal.