Why does VS2013 reset my vertically split XAML windows?

Question

Whenever I look at a XAML file, I always split them vertically (design surface on the left, XAML on the right), as I find it much easier to work this way.

Usually, when I close and reopen VS, the setting is remembered, however fairly often VS just forgets it, and opens them all split horizontally.

Anyone any idea why it does this?

Answer 1

You can set the default to split vertically from

Tools > Options > XAML Designer:

• Default document view : split

• Split Orientation: vertical