With Nested Portlets inside Nested Portlets Drag and Drop Delegation listeners are not completely released

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.1.X EE
• Fix Version/s: 6.1.X EE, 6.2.4 CE GA5, 6.2.X EE, 7.0.0 M6
• Component/s: Frontend Infrastructure
• Labels:
  • ee-ts
  • liferay-fixpack-portal-42-6130
  • liferay-fixpack-portal-56-6210
• Branch Version/s:
  6.2.x, 6.1.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal-ee/pull/10160

Reproduction Steps:

1. Start a Liferay bundle and log on as default admin
2. Place a Nested Portlets portlet on the default page
3. Place a Nested Portlets portlet inside the other Nester Portlets portlet
4. Open the page without JavaScript minification (append "?js_fast_load=0" to the url)
5. Start dragging the outer Nested Portlets portlet, so we're sure the Drag&Drop is correctly initialized
5. Open the browser's Developer Tools (F12)
6. Open the "Debugger" section
7. Open the file dd-drag.js by choosing it from the file selector (the folder icon on the top left)
8. Search for the first occurence of "_handleMouseDownEvent: function"
9. Create a new breakpoint at the line that says "this.fire(EV_MOUSE_DOWN,

{ ev: ev }

);"
10. Edit the brekpoint's conditions by right-clicking the bullet on the left side of the line
11. Add as the condition the following code: "console.log('dd-drag')", this will log to the console without stopping the execution of javascript
12. Open the Developer Tools' "Console" section
13. Click 5 times on the inner Nested Portlets portlet's body.

Expected results:

• Nothing is logged to the console
  This is the expected behaviour because the method "_handleMouseDownEvent" is detached by "Y.DD.Drag._unprep" which is called on "drag:mouseup" as set up in "Y.DD.Delegate.initializer".

Actual results:

• At the first click nothing is logged to the console
• At the second click "dd-drag" is logged once
• At the third click "dd-drag" is logged twice
• At the fourth click "dd-drag" is logged three times
• At the fifth click "dd-drag" is logged four times
  In total "dd-drag" is logged to the console 10 times.