I am developing with 'sencha app watch' running, and while it is running, classic.json and sass/example/bootstrap.json grows with each change repeating a chunk of configuration.

I attach the capture of two diffs:

classic.json:classic.json.jpg bootstrap.json: sass_example_bootstrap.json.jpg

In each image, at left is shown the "before" content while 'sencha app watch' is running; at right, the "after" content when 'sencha app watch' is stopped.

I suspect each line generated belongs to each 'changes detected' happened while running.

Sencha Cmd v6.1.3.42