linux ubuntu 16.04 (linux mint 18)
Unless i press shift the home key isn't moving the caret to the start of the line (as it should), or possible to the start of the line, excluding initial spaces and tabs.
The keybinding for Insertion Point to Beginning of Text on Line is Home by default, so that sounds odd. Are you using the default key map? Does the Home button work as it should in other applications? Please see the User Guide for how to add or change keybindings:
The problem with using the Home key is not related to the keying of keys in Linux. The correct key operation in the code editor for the Home key occurs. But more often the Home key in the code editor does not work. Also note that in the mapping for it is not installed any operation.
the problem exists and I would like to use the key in the code editor
as well as it works in other applications of the operating system.
All the best.