Parsed buffer without patch:

Note (export-snippet (:back-end "html" :value "@@html:" :begin 1 :end 8
:post-blank 0 :parent #2))

(org-data
 (:begin 1 :contents-begin 1 :contents-end 52 :end 52 :robust-begin 3 :robust-end 50 :post-blank 0 :post-affiliated 1 :path "/tmp/bug.org" :mode org-data :CATEGORY "bug" :granularity nil)
 (section
  (:begin 1 :end 52 :contents-begin 1 :contents-end 52 :robust-begin 1 :robust-end 50 :post-blank 0 :post-affiliated 1 :mode first-section :granularity nil :parent #0)
  (paragraph
   (:begin 1 :end 29 :contents-begin 1 :contents-end 28 :post-blank 1 :post-affiliated 1 :mode top-comment :granularity nil :parent #1)
   (export-snippet
    (:back-end "html" :value "@@html:" :begin 1 :end 8 :post-blank 0 :parent #2))
   #("fo aksjdaksjd ajs d\n" 0 20
     (:parent #2)))
  (paragraph
   (:begin 29 :end 52 :contents-begin 29 :contents-end 52 :post-blank 0 :post-affiliated 29 :mode nil :granularity nil :parent #1)
   #("askdjas aksj daj sao@@\n" 0 23
     (:parent #2)))))

With patch:

(org-data
 (:begin 1 :contents-begin 1 :contents-end 52 :end 52 :robust-begin 3 :robust-end 50 :post-blank 0 :post-affiliated 1 :path "/tmp/bug.org" :mode org-data :CATEGORY "bug" :granularity nil)
 (section
  (:begin 1 :end 52 :contents-begin 1 :contents-end 52 :robust-begin 1 :robust-end 50 :post-blank 0 :post-affiliated 1 :mode first-section :granularity nil :parent #0)
  (paragraph
   (:begin 1 :end 29 :contents-begin 1 :contents-end 28 :post-blank 1 :post-affiliated 1 :mode top-comment :granularity nil :parent #1)
   #("@@html:fo aksjdaksjd ajs d\n" 0 27
     (:parent #2)))
  (paragraph
   (:begin 29 :end 52 :contents-begin 29 :contents-end 52 :post-blank 0 :post-affiliated 29 :mode nil :granularity nil :parent #1)
   #("askdjas aksj daj sao@@\n" 0 23
     (:parent #2)))))