If a sitename is passed, filter based on sitename for spectre status. Fixes bug #11541.

docs/changelog/7.x.x.txt

@@ -2,6 +2,7 @@
  - fixed #11556: New cart doesn't work with other forms on the same page
  - fixed #11557: Shop credit deduction calculated incorrectly
  - fixed #11561: PayDriver_Cash - password help
+ - fixed #11541: running workflows screen
 
 7.9.4
  - We're shipping underscore.js now for its suite of extremely handy utility

lib/Spectre/Workflow.pm

@@ -295,7 +295,8 @@ sub getJsonStatus {
     my %output;
     if ($sitename) { #must have entry for each queue
         %output = %queues;
-        foreach my $instance ($self->getInstances) {
+        INSTANCE: foreach my $instance ($self->getInstances) {
+            next INSTANCE unless $instance->{sitename} eq $sitename;
             my $queue = ucfirst($instance->{status});
             push @{$output{$queue}}, [$instance->{workingPriority}, $instance->{instanceId}, $instance];
         }