Multiple dots in file name ➝ extension being lost

[mateatslc]

Environment

• VSCode Version: v1.27.2
• OS Version: macOS v10.14

Actual behavior

Duplicating files with multiple dots in their name causes file extension being lost.

For example calling duplicate on confirm.modal.ctrl.js creates confirm-copy.modal.ctrl without the original .js extension.

Expected behavior

Above operation to create confirm-copy.modal.ctrl.js or rather confirm.modal.ctrl-copy.js

Steps to reproduce

Duplicate any files with multiple dots in their name.

Settings

Default config, didn't change anything in settings.