Special characters makes me intellisenseless.
To reproduce the problem: create new wpf project and change
Title="MainWindow"
to
Title="{Binding Test, FallbackValue=R&R}"
Hit F5 or F6 - everything looks fine.
But Intellisense is now dead for this xaml. Why? What should I do?
I cannot duplicate this problem, but I'm using VS2013 with latest updates.
Your options are to check that you have the latest upgrades, then file a bug report as Ron Beyer mentioned.
Otherwise you can also try cleaning and rebuilding the project, or toggling intellisense off, then on again.