IssueTracker

Using RecyclerView from support-v7 21.0.3, I have an issue when I try to reorder items. I use a vertical StaggeredGridLayoutManager with 2 columns. I put in it 3 items (simple TextViews). Here's the starting layout:

Item 1   Item 2
Item 3

When I move the second one at position 0, I expect to see this:

Item 2   Item 1
Item 3

But I have this (see attached screenshot):

         Item 2
Item 1   Item 3

If I swipe on the RecyclerView, the empty cell disappears, and I see the result I expected earlier.

Here's the code I use to move the second item to position 0:

items.remove(1);
items.add(0, item);
notifyItemMoved(1, 0);

Note that with a GridLayoutManager, it works fine. A minimum example is available on GitHub[1], while I explained my original issue (at the time I thought it was a bug in my code) in depth on StackOverflow[2].

[1]: https://github.com/Kernald/android-recyclerview-staggeredgridlayoutmanager-issue
[2]: http://stackoverflow.com/q/27800575/775894