UPDATE: 2015/10/19 . The problem arises again. Disabling code analysis and checking todos prevents the commit dialog from getting into.
UPDATE: 2015/10/13 . The problem seems to be magically fixed.
I have the same problem. The Android Studio project has an open ticket with additional information. Despite this, this is a serious problem.
To work around this problem until the development team answers it, you can use the command line. I had to delete the .git directory in order to get a commit and click to work, though.
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