Edit/"Select All" Menu item disabled with single project selected in Project Explorer

[dnapoletanoexp]

The "Select All" action in Project Explorer does not work when only a project is clicked; it works only after clicking another.
Steps for reproducing the problem:

• Open Eclipse on a workspace with two or more projects
• In Project Explorer, click on a project
• Click on "Edit" menu: the "Select All" item is disabled (it should be enabled), and CTRL+A has no effect (it should select all projects)
• In Project Explorer, click on another project (or click again on the same project)
• Click again on the "Edit" menu: the "Select All" item is enabled, and CTRL+A works as expected