diff --git a/apps/mobile/modules/t3-markdown-text/ios/T3MarkdownText.mm b/apps/mobile/modules/t3-markdown-text/ios/T3MarkdownText.mm
index 8fa5abfe2a8e..c0db129ee8c8 100644
--- a/apps/mobile/modules/t3-markdown-text/ios/T3MarkdownText.mm
+++ b/apps/mobile/modules/t3-markdown-text/ios/T3MarkdownText.mm
@@ -311,6 +311,12 @@ - (instancetype)initWithFrame:(CGRect)frame
     _textView.editable = false;
     _textView.textContainerInset = UIEdgeInsetsZero;
     _textView.textContainer.lineFragmentPadding = 0;
+    // The shadow node already sized this view to fit every line. A container
+    // that tracks the frame can come out a fraction of a point shorter after
+    // pixel rounding, and TextKit then drops the last line. Size it by hand
+    // with unbounded height and let the view's bounds clip.
+    _textView.textContainer.widthTracksTextView = NO;
+    _textView.textContainer.heightTracksTextView = NO;
     _textView.delegate = self;
     // Chat text supports selection and contextual actions, but not drag-and-drop.
     _textView.textDragInteraction.enabled = NO;
@@ -477,6 +483,7 @@ - (void)drawRect:(CGRect)rect
   }
   if (frameChanged) {
     _textView.frame = _view.frame;
+    _textView.textContainer.size = CGSizeMake(CGRectGetWidth(_view.frame), CGFLOAT_MAX);
   }
 
   // Text attachments have no native link element. Expose their existing runs