After some research I finally found the origin of the problem. In Natty Narwhal the folder icon was called "Home folder" icon so the people expected the Home folder to open even when a trash folder was open. Moreover it didn't exist the "open new window" option which now appears when the icon is right clicked.
Then Mark Shuttleworth wrote:
"The Home Folder icon on the launcher should always open the Home folder
when clicked. If a previous invocation, or Trash, or other windows are
open and pointed elsewhere, then a new window should open with the Home
folder.
Mark"
Things have changed since then and now this behaviour is inconsistent. As I see it we have three options:
1) Declare this bug as invalid since the program was designed to behave like this.
2) Write a letter to Mark asking if he has changed his mind about this.
3) Just commit a fix and see what happens.
Everlasting bug: Full story explained
After some research I finally found the origin of the problem. In Natty Narwhal the folder icon was called "Home folder" icon so the people expected the Home folder to open even when a trash folder was open. Moreover it didn't exist the "open new window" option which now appears when the icon is right clicked.
Then Mark Shuttleworth wrote:
"The Home Folder icon on the launcher should always open the Home folder
when clicked. If a previous invocation, or Trash, or other windows are
open and pointed elsewhere, then a new window should open with the Home
folder.
Mark"
Things have changed since then and now this behaviour is inconsistent. As I see it we have three options:
1) Declare this bug as invalid since the program was designed to behave like this.
2) Write a letter to Mark asking if he has changed his mind about this.
3) Just commit a fix and see what happens.