Final setup:config-import:config-split not being run on blt local:setup

[arknoll]

My system information:

• Operating system type: OSX
• Operating system version: Sierra
• BLT version: 8.7.0-beta3

When I run this command:

blt local:setup

I get the following output:
After the drupal:install task runs and in the setup:config-import:config-split task the config is not imported. This is because

<available file="${cm.core.dirs.sync.path}/core.extension.yml"/>

is not true. This is because the current working directory is:

[echo] Resolved [absolute] path: /Users/alex.knoll/sites/canary/vendor/acquia/blt/phing

and ${cm.core.dirs.sync.path} resolves to '../config/default'.

I expected this to happen:

<available file="${cm.core.dirs.sync.path}/core.extension.yml"/>

to resolve to true and config to be imported.