DotCover issue - doesn't see unit tests that cover else block after a type evaluation if statement

I think I've found an issue with dotcover, where it doesn't see unit test coverage for the else block of an if statement after a type evaluation.

For example, in the code sample below, if you have a unit test for the if block, and then one for the else block, it thinks the else block isn't covered:

if (myObject is Type1)

{

lines_of_code

}

else

{

more lines of code

}