sencha app watch not picking up changes

I have the following structure of the workspace:

workspace.dir=....

workspace.packages.dir=${workspace.dir}/platform/sencha-platform/...

app.dir=${workspace.dir}/apps/test/src/main/sencha

build.dir=${app.dir}/../../../target/sencha-app

This is part of a complex application based on Maven build process and I'm trying to fit Sencha in our structure. For that purpose, I'm experimenting with Sencha ExtJS 5 and Cmd 5. However, when I try to use the sencha app watch, it doesn't actually propagate changes to the ${build.dir}. It works if I load the application directly from the src folder. I think in Cmd 4 it worked for both cases.