Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.20%. Comparing base (cdd48f4) to head (3078b54).

@@           Coverage Diff           @@
##             main    #3203   +/-   ##
=======================================
  Coverage   96.20%   96.20%           
=======================================
  Files         151      151           
  Lines       15074    15081    +7     
  Branches     2718     2647   -71     
=======================================
+ Hits        14502    14509    +7     
  Misses        572      572           

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Hi @ryuapp, Thank you for doing the research. I appreciate your work.

There is potential for performance improvement by stopping recursive calls.

However, the essential cause of #3201 seems to be elsewhere. I will create a PR after this, but it will likely be a fix.

diff --git a/src/jsx/dom/render.ts b/src/jsx/dom/render.ts
index dbb8478b..6b18f2ae 100644
--- a/src/jsx/dom/render.ts
+++ b/src/jsx/dom/render.ts
@@ -279,7 +279,7 @@ const findInsertBefore = (node: Node | undefined): SupportedElement | Text | nul
     return node.e
   }
 
-  if (node.vC) {
+  if (node.vC && node.pP) {
     for (let i = 0, len = node.vC.length; i < len; i++) {
       const e = findInsertBefore(node.vC[i])
       if (e) {

Great work, @usualoma.
The issue has been fixed in #3205, so I close this PR.

@ryuapp Thanks!