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, the welcome instructions probably will be closed as default, so, not visible.