diff --git a/third_party/blink/renderer/core/dom/attribute.h b/third_party/blink/renderer/core/dom/attribute.h
index f7c276d17c4516..1e20abb795e15b 100644
--- a/third_party/blink/renderer/core/dom/attribute.h
+++ b/third_party/blink/renderer/core/dom/attribute.h
@@ -30,9 +30,6 @@
 #include "third_party/blink/renderer/core/dom/qualified_name.h"
 #include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
 
-#include "base/record_replay.h"
-#include "third_party/blink/renderer/core/html_names.h"
-
 namespace blink {
 
 // This value is set fairly arbitrarily, to get above what we expect to be
@@ -53,12 +50,7 @@ class Attribute {
 
  public:
   Attribute(const QualifiedName& name, const AtomicString& value)
-      : name_(name), value_(value) {
-    if (name == html_names::kSrcAttr) {
-      recordreplay::Assert("[RUN-658-1438] Attribute::Attribute %s",
-                           value.IsNull() ? "(null)" : value.Utf8().c_str());
-    }
-  }
+      : name_(name), value_(value) {}
   Attribute(QualifiedName&& name, AtomicString&& value)
       : name_(std::move(name)), value_(std::move(value)) {}
 
@@ -76,13 +68,7 @@ class Attribute {
   bool Matches(const QualifiedName&) const;
   bool MatchesCaseInsensitive(const QualifiedName&) const;
 
-  void SetValue(const AtomicString& value) {
-    if (name_ == html_names::kSrcAttr) {
-      recordreplay::Assert("[RUN-658-1438] Attribute::SetValue %s",
-                           value.IsNull() ? "(null)" : value.Utf8().c_str());
-    }
-    value_ = value;
-  }
+  void SetValue(const AtomicString& value) { value_ = value; }
 
   // Note: This API is only for HTMLTreeBuilder.  It is not safe to change the
   // name of an attribute once parseAttribute has been called as DOM
diff --git a/third_party/blink/renderer/core/layout/ng/layout_ng_block_flow_mixin.cc b/third_party/blink/renderer/core/layout/ng/layout_ng_block_flow_mixin.cc
index 629ccc9b70726d..a312a4f8447d49 100644
--- a/third_party/blink/renderer/core/layout/ng/layout_ng_block_flow_mixin.cc
+++ b/third_party/blink/renderer/core/layout/ng/layout_ng_block_flow_mixin.cc
@@ -270,6 +270,9 @@ template <typename Base>
 void LayoutNGBlockFlowMixin<Base>::UpdateNGBlockLayout() {
   Base::CheckIsNotDestroyed();
 
+  recordreplay::Assert(
+      "[RUN-1239-2230] LayoutNGBlockFlowMixin::UpdateNGBlockLayout %d",
+      Base::IsOutOfFlowPositioned());
   if (Base::IsOutOfFlowPositioned()) {
     LayoutNGMixin<Base>::UpdateOutOfFlowBlockLayout();
     return;
diff --git a/third_party/blink/renderer/core/layout/ng/svg/layout_ng_svg_text.cc b/third_party/blink/renderer/core/layout/ng/svg/layout_ng_svg_text.cc
index b003c773a56caf..23e772f0ace3fe 100644
--- a/third_party/blink/renderer/core/layout/ng/svg/layout_ng_svg_text.cc
+++ b/third_party/blink/renderer/core/layout/ng/svg/layout_ng_svg_text.cc
@@ -213,7 +213,12 @@ void LayoutNGSVGText::UpdateBlockLayout(bool relayout_children) {
 
   gfx::RectF old_boundaries = ObjectBoundingBox();
 
+  recordreplay::Assert("[RUN-1239-2230] LayoutNGSVGText::UpdateBlockLayout A %d",
+                       GetElement()->RecordReplayId());
   UpdateNGBlockLayout();
+  recordreplay::Assert("[RUN-1239-2230] LayoutNGSVGText::UpdateBlockLayout B %d",
+                       GetElement()->RecordReplayId());
+
   needs_update_bounding_box_ = true;
 
   gfx::RectF boundaries = ObjectBoundingBox();
diff --git a/third_party/blink/renderer/platform/geometry/layout_unit.h b/third_party/blink/renderer/platform/geometry/layout_unit.h
index e0e9d6df6ef404..1145ab4662a8a9 100644
--- a/third_party/blink/renderer/platform/geometry/layout_unit.h
+++ b/third_party/blink/renderer/platform/geometry/layout_unit.h
@@ -246,10 +246,6 @@ class LayoutUnit {
 
   LayoutUnit AddEpsilon() const {
     LayoutUnit return_value;
-
-    // https://linear.app/replay/issue/RUN-1239#comment-df307091
-    recordreplay::Assert("[RUN-1239-1435] LayoutUnit::AddEpsilon %d", value_);
-
     return_value.SetRawValue(
         value_ < std::numeric_limits<int>::max() ? value_ + 1 : value_);
     return return_value;