We've got some basic feedback channels online for Sublime Merge, with more documentation to come in the future.
If you are running into trouble with Sublime Text, please use the following links to get help:
sublimehq/Packages – source code and issue tracker for language syntaxes included with Sublime Text
SublimeTextIssues/Core – community-run issue tracker for Sublime Text, with contributions from sublimehq
Disabling Third-Party Packages:
Latest Stable Annnouncement:
Latest Dev Build Discussions: