Syntax issue with await foreach C#

[tristantrainer]

I love this theme!! Just one thing I've noticed, colouring in the theme doesn't work in a file past the point where an await foreach block is declared in .Net 3.1.100. The colour of keywords is lost for each subsequent keyword following the await statement.

[tcd]

@KiriathIV
Could you provide a text/code snippet with the issue present?
I use C# daily for work, so I'm happy to fix this one.