Selecting "All" in views select list does not display all project (i.e. has no effect)

The views select list has an "All" entry that would presumably show all of the projects. However, when the All option is selected, nothing happens.

Here is an excerpt from the markup for our list:

<select id="selectView" onChange="javascript:selectViewOnChange();">
<option id=" " value="view/%20/"></option>
<option id="12.20.x" value="view/12.20.x/">12.20.x</option>
<option id="All" value="">All</option>
<option id="Apps" value="view/Apps/">Apps</option>

... [16 more entries] ...

<option value="">----------------</option>
<option value="newView">New View</option>
</select>

When I select the All option, I do not see any javascript errors or warnings in the Chrome Developer Tools console.