fix: prefix # to create a heading lost properties

src/main/frontend/handler/db_based/editor.cljs

@@ -79,8 +79,11 @@
                       first-elem-type (first (ffirst ast))
                       block-with-title? (mldoc/block-with-title? first-elem-type)
                       content' (str (config/get-block-pattern :markdown) (if block-with-title? " " "\n") content)
-                      block (merge block (block/parse-block (assoc block :block/content content')))]
-                  (update block :block/refs remove-non-existed-refs!)))
+                      block' (merge block (block/parse-block (assoc block :block/content content')))
+                      block' (if (seq (:block/properties block))
+                               (update block' :block/properties (fn [m] (merge m (:block/properties block))))
+                               block')]
+                  (update block' :block/refs remove-non-existed-refs!)))
         block (if (and left (not= (:block/left block) left)) (assoc block :block/left left) block)
         result (-> block
                    (merge (if level {:block/level level} {}))