The mastery list filter box has a couple of bugs which would be great to have fixed.
1. If you collapse a category and then type into the filter box, when you open that category it's not filtered.
2. If you type into the filter box and then collapse a category that has items that match the filter, instead of collapsing it switches back to the unfiltered list even though the down caret changes to a right caret as if it was collapsed.
3. If you hit Cancel to clear the filter and then type something else it doesn't work.
