tooltipFollowsMouse: false throws error

[matthew-dean]

After turning off tooltipFollowsMouse, and testing with setting an annotation, an error is thrown on hover. The issue is here:

var gutterElement = gutter.$cells[editor.session.documentToScreenRow(row, 0)].element;

In debugging, it looks like editor.session.documentToScreenRow(row, 0) returns the actual line position of the annotation. However, gutter.$cells appears to be an array of the "on-screen" cells. So, in my case, gutter.$cells stops at 40, and the returned value from documentToScreenRow was 389. Therefore the error thrown is: "Cannot read property 'element' of undefined".

[matthew-dean]

Thanks @nightwing!