Browser versions and OS (and desktop environment, if applicable)
IE 9 Windows 7
Removing an item from a LiveGridView creates an empty area within the grid.
I can't really provide an example, but I think, you can take any LiveGrid, as long as it contains many items (so the vertical scrollbar is visible). I'm using the default configuration: 200 items are loaded and about 20 of them are visible. After removing some items (using store.remove(model)) it looks like this:
This requires a lot of internal changes within LiveGridView.
Currently livegridview is meant to be a server "streaming" view. It does not support any client side modifications, however adding support for removing should be possible. Every remove/add needs to be done on the backend and you need to reload the LiveGridView.
I will push this to the bug tracker as a feature request.