IFrames that open from dropdown menus freeze at the loading screen

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 Alpha 1
• Fix Version/s: 7.0.0 Alpha 1
• Component/s: ~ [Archived] Frontend Infrastructure
• Labels:
  • R7Alpha
• Fix Priority: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/30448

Steps to reproduce:

1. Execute command 'git clean -fdx' in the portal directory (required)
2. Build portal
3. Start bundle
4. Log in
5. Navigate to Welcome page
6. Click the cog icon in the 'Sign In' portlet to open the portlet options menu
7. Click 'Configuration' to open the portlet configuration iframe

Expected result: IFrame for configuration successfully loads
Actual result: Portlet configuration iframe does not successfully load; a console warning is thrown:
18:39:39,089 WARN [http-bio-8080-exec-9][code_jsp:130] {code="404", msg="ProxyServlet: /o/frontend-js-web/build/aui-skin-deprecated/images/loading_indicator.gif", uri=/o/frontend-js-web/build/aui-skin-deprecated/images/loading_indicator.gif

Note: This behavior only occurs after executing 'git clean' in the portal directory. After building again without executing the command, the issue is no longer reproducible.

Reproduced on:
Tomcat 7.0.62 + MySQL 5.5
Portal Master GIT ID: 240cc805adde0eeb178d456ddbc198b379f0ebcd.