The text input cursor now correctly navigates around multi-character placeholder tokens like [Pasted text #1], [Image #1], and [...Truncated text #1] as atomic units. Word-movement commands (w, b, e in vim mode and Ctrl+arrows) skip over these placeholders rather than stepping through them character-by-character.
Evidence
New placeholder-aware cursor movement (search for "placeholderEndingAt", "placeholderStartingAt", "snapOutOfPlaceholder")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.