This is the default setting, enabling Shiftescape to exit multi-cursor mode:
{ "key": "shift+escape", "command": "removeSecondaryCursors",
"when": "editorHasMultipleSelections && textInputFocus" },
So I’ve added the following to my own configuration, to enable the much more intuitive escape to exit multi-cursor mode:
{
"key": "escape",
"command": "removeSecondaryCursors",
"when": "editorHasMultipleSelections && textInputFocus"
},