AE lexicon icon disappears on usage when there are more instance

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, 7.2.X, Master
• Fix Version/s: 7.0.0 DXP FP95, 7.0.10.15 DXP SP15, 7.0.X, 7.1.10 DXP FP20, 7.1.10.5 SP5, 7.1.X, 7.2.10 DXP FP8, 7.2.10.2 DXP SP3, 7.2.X, 7.3.5 CE GA6, 7.3.10 DXP GA1, Master
• Component/s: Alloy Editor
• Labels:
  • 7.3-known-issues
  • ee-ts
  • liferay-dxp-70-sp15
  • liferay-dxp-71-sp5
  • liferay-dxp-72-sp3
  • liferay-fixpack-de-95-7010
  • liferay-fixpack-dxp-20-7110
  • liferay-fixpack-dxp-8-7210
  • liferay-ga5-ce-734
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/antonio-ortega/liferay-portal/pull/124

1. Create a Web Content structure (or edit the existing "Basic Web Content structure") and make sure it has multiple (at least 2) HTML fields
2. Create a new Web Content from this structure
3. Click in the HTML input field and switch to source format (the button with the label "</>")
4. Before doing anything else, go to the second HTML field and click the same "</>" button
   Expected behavior:
   The button to always show the proper icon in accordance with the chosen input format ("source" or "design").

Current behavior:
Always the last used HTML field's icon is shown properly, all others disappear (the result is even more visible with 3 or more HTML fields).