Description Vasili Gulevich 2019-04-19 07:14:14 EDT

Testing has revealed a regression in change https://git.eclipse.org/r/#/c/139091/ (Support for Eclipse 4.11)

```
get-button "View Menu" | click
get-view "Project Explorer" | get-menu -path "Select Working Set..." | click
with [get-window "Select Working Set"] {
    try -command {
	    with [get-table] {
	        get-item -path ws1 | check
	    } 
	} -catch  {
        get-button "New..." | click
    	with [get-window "New Working Set"] {
	        get-table | select Resource | double-click
	        get-editbox -after [get-label "Working set name:"] | set-text ws1
	        get-button Finish | click
	    }
	    with [get-table] {
	        get-item -path ws1 | check
	    } 
    }
    get-button OK | click
}
get-button "View Menu" | click
get-view "Project Explorer" | get-menu -path "Edit Active Working Set..." | click
with [get-window "Edit Working Set"] {
    with [get-tree] {
        get-item -path belongsToWs1 | check
        select belongsToWs1
    }
    get-button Finish | click
}
with [get-view "Project Explorer"] {
	get-menu -path "Deselect Working Set" | click
	get-menu -path "Top Level Elements/Working Sets" | click
	get-menu -path ".* ws1" | click
        get-tree | select "ws1/belongsToWs1"
}
```

*Expected*
Project Explorer should switch to working set mode and show a project inside working set ws1.

*Actual*
`get-menu -path ".* ws1" | click` has no effect. Project Explorer shows project as a tree root as if working set is not selected.

Investigation entry point: org.eclipse.rcptt.tesla.internal.ui.player.SWTUIPlayer.clickMenuItem(SWTUIElement, boolean, Widget)