Browser:

Firefox 39.0
Mozilla Firefox for Ubuntu
canonical - 1.0

book page 28
app/views/templates/addstock-modal.html line 17-18
In my version of Firefox, this code has the effect of setting the value of company.label to the $scope variable property newStock.company instead of a reference to the company object.

After debugging, determined that this operation works correctly in Chrome.

So much for Test once, run everywhere. What can I learn from this experience? Is the Firefox problem something that gets reported to the AngularJS team? Have the book examples been tested in any Linux environments, and if so, what is the recommended browser?

I noticed some oddities with Firefox but moved on and used chrome as it's a learning exercise.

Looking at online example http://www.stockdog.io/#/dashboard the initial load of the page(refresh) with firefox give little errors like "Data column(s) for axis #0 cannot be of type string" on the right hand pie chart. Also modals fire the default event and leave ghosted incorrect validation errors hovering after modal has closed. Adding stocks to a watchlist is just a disaster zone though...

I believe the main reason is that the versions used in the examples are outdated. If you clone (npm install, bower install) the updated example that I've posted on this forum then firefox functions correctly. The only thing I have not done is looked into the ghosting of the validation error:

http://i.imgur.com/4mCMBDj.png

I'd recommend that you continue with chrome, learn the lessons and move on. I suggest moving onto meanjs.org flavour of the mean stack and you can apply what you've learned.