It seems that the Dashboard Tabs Panel is often empty as default. This was probably the regression:
cbc0e661544a31290099ab3d88481bb8d4a3003c
The variable `$is_selected` was defined inside a foreach loop, but that loop was terminated when it was then read again.
We should redefine that variable in the right scope.
----
Interestingly this can somehow break the homepage of some Phorge installations. For example, when you have welcome instructions in one panel, like here:
https://phabricator.wikimedia.org/
Without this fix, your welcome instructions probably are closed and not visible.