Link isn't rendered as active for matched routes with optional param

[jimkyndemeyer]

Version

3.0.2

Test Case

http://jsbin.com/faziyeroti/edit?html,js,output

Steps to reproduce

Click the "Customer id 1" link.

Expected Behavior

The "Customers" link should be shown as active as this is the route that was matched.

Actual Behavior

The "Customers" link is not shown as active.

[timdorr]

Dupe of #3233, #3237, #3277. Please check existing issues first.

[jimkyndemeyer]

Thanks. Did a search, but apparently not one with the right terms.

If others stumble across this issue, the solution appears to be a nested route with no component: #3277 (comment)