Editora 0.11.0. Archived, so links from that release keep working. Read the 0.18.5 page →
Edit: Collapse to Single Caret
edit.collapseCarets Collapse multiple carets back to a single caret.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Edit: Collapse to Single Caret, then press Enter. It has no default keybinding, but you can bind one in Settings → Keymaps.