diff --git a/docs/ISSUES.md b/docs/ISSUES.md
index 5aa6b8f5..f6cf50bf 100644
--- a/docs/ISSUES.md
+++ b/docs/ISSUES.md
@@ -248,6 +248,13 @@ tree:
   bytes against an expected 0, on a diff that touches only GLSL and the terrain
   renderer's uniform plumbing. It passed in isolation and in four other full
   runs of the same binary, so it is the same class rather than a new defect.)
+- `AcDream.App.Tests.Rendering.ArchRenderSceneTests.TransformUpdateBatch_ReusesRetainedStorage`
+  (added 2026-07-28 during Campaign V slice V7, on a docs-only tree. Two of six
+  consecutive whole-suite Release runs failed on it and nothing else; the class
+  passes 12/12 in isolation. Its assertion is the same shape as the others —
+  `GC.GetAllocatedBytesForCurrentThread()` delta across `scene.Apply(updates)`
+  asserted equal to zero — so it is a fourth member of this family, not a new
+  defect. Recorded so the next reader does not re-investigate it.)
 
 Measured over six consecutive Release runs of the App suite on an unmodified
 tree: four passed 3,846/3, and two failed with exactly one failure — a different