...
Columns on a board will now dynamically resize to fit the number of field values. This reduces the amount of side scrolling required. As part of this change we have also introduced fixed column headers, so when you your board has a lot of rows you will always know what column you are dropping an issue into.
...
We have improved the user experience around saved canvases making it more familiar to the way filters are handled in the issue navigator. If you make a change an 'edited' notification will appear allowing you to save the modification or clear discard it and return to the saved canvas.
...