On labtesthorizon the instance puppet tab users filter buttons implemented by horizon.tables.FixedFilterAction. The buttons render correctly and display the correct counts, but as soon as I add that filter the table empties out and the buttons do nothing.

I've confirmed that the filter methods themselves are returning the correct values; I've compared their behavior to similar code in the Image panel to confirm that the behavior is consistent. Probably something is broken on the client side where, presumably, the filtered and unfiltered lists are meant to be cached.

Usually when I have problems like this it's because of some simple difference in the rendered html or js which I'm too clueless to notice.