I have a button that looks like the below. When I remove the ng-disabled everything works fine, otherwise the spinner never appears.
<button
ladda="vm.runningReport"
data-style="zoom-in"
class="btn btn-default"
uib-tooltip="Run Report"
tooltip-placement="top"
ng-disabled="vm.parameters.length > 0 && !vm.parametersSupplied(vm.parameters.values)"
ng-click="vm.run(query)">
<i class="glyphicon glyphicon-play text-primary"></i>
</button>