diff --git a/macos/Sources/Ghostty/SurfaceScrollView.swift b/macos/Sources/Ghostty/SurfaceScrollView.swift
index 714227cd1..b1e1b9baf 100644
--- a/macos/Sources/Ghostty/SurfaceScrollView.swift
+++ b/macos/Sources/Ghostty/SurfaceScrollView.swift
@@ -142,18 +142,35 @@ class SurfaceScrollView: NSView {
         // Only update sizes if we have a valid (non-zero) content size. The content size
         // can be zero when this is added early to a view, or to an invisible hierarchy.
         // Practically, this happened in the quick terminal.
-        let contentSize = scrollView.contentSize
-        if contentSize.width > 0 && contentSize.height > 0 {
-            // Keep document width synchronized with content width
-            documentView.setFrameSize(CGSize(
-                width: contentSize.width,
-                height: documentView.frame.height
-            ))
-            
-            // Inform the actual pty of our size change
-            surfaceView.sizeDidChange(contentSize)
+        var contentSize = scrollView.contentSize
+        guard contentSize.width > 0 && contentSize.height > 0 else {
+            synchronizeSurfaceView()
+            return
         }
         
+        // If we have a legacy scrollbar and its not visible, then we account for that
+        // in advance, because legacy scrollbars change our contentSize and force reflow
+        // of our terminal which is not desirable.
+        // See: https://github.com/ghostty-org/ghostty/discussions/9254
+        let style = scrollView.verticalScroller?.scrollerStyle ?? NSScroller.preferredScrollerStyle
+        if style == .legacy {
+            if (scrollView.verticalScroller?.isHidden ?? true) {
+                let scrollerWidth = NSScroller.scrollerWidth(for: .regular, scrollerStyle: .legacy)
+                contentSize.width -= scrollerWidth
+            }
+        }
+        
+        // Keep document width synchronized with content width
+        documentView.setFrameSize(CGSize(
+            width: contentSize.width,
+            height: documentView.frame.height
+        ))
+        
+        // Inform the actual pty of our size change. This doesn't change the actual view
+        // frame because we do want to render the whole thing, but it will prevent our
+        // rows/cols from going into the non-content area.
+        surfaceView.sizeDidChange(contentSize)
+        
         // When our scrollview changes make sure our surface view is synchronized
         synchronizeSurfaceView()
     }