diff --git a/packages/shared/src/terminalOutput.ts b/packages/shared/src/terminalOutput.ts
index 9172554e07336..e53127f7d1b25 100644
--- a/packages/shared/src/terminalOutput.ts
+++ b/packages/shared/src/terminalOutput.ts
@@ -598,8 +598,14 @@ export function terminalOutputResumeText(state: TerminalOutputState): string {
   const { screen } = state;
   const lastRow = screen.lines.length - 1;
   // Moves are relative to the last line, and a viewer only holds the lines in `text`.
-  const shownLines = state.text.split("\n").length;
-  const reachable = Math.min(LIVE_LINES, shownLines) - 1;
+  let reachable = 0;
+  let cursor = 0;
+  while (reachable < LIVE_LINES - 1) {
+    const newline = state.text.indexOf("\n", cursor);
+    if (newline === -1) break;
+    reachable += 1;
+    cursor = newline + 1;
+  }
   const up = (row: number) => Math.min(lastRow - row, reachable);
   const goTo = (row: number, col: number) =>
     (up(row) > 0 ? `${ESC}[${up(row)}A` : "") + `${ESC}[${col + 1}G`;