I am using Sublime Text 3, and I installed the very useful angularJs package which gives great code completion for both JavaScript and HTML files, and I really don't want to disable it, but it stops the default word completion of Sublime Text.
In Preference->Package Settings->AngularJs I set the disable_default_js_completions option to false in both user and default settings, but it still messes with the word completion.
Found other people with the same issue : https://github.com/angular-ui/AngularJS-sublime-package/issues/69
The only fix seems to be to install a TernJs package for auto-completion to replace the default functionality.