core/modules/taxonomy/src/TermStorage.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/modules/taxonomy/src/TermStorage.php b/core/modules/taxonomy/src/TermStorage.php
index 826cfbb..2db0392 100644
--- a/core/modules/taxonomy/src/TermStorage.php
+++ b/core/modules/taxonomy/src/TermStorage.php
@@ -166,7 +166,7 @@ protected function getAncestors(TermInterface $term) {
 
       while ($tid = array_shift($search)) {
         foreach ($this->getParents(static::load($tid)) as $id => $parent) {
-          if ($parent && !isset($this->ancestors[$id])) {
+          if ($parent && !isset($this->ancestors[$term->id()][$id])) {
             $this->ancestors[$term->id()][$id] = $parent;
             $search[] = $id;
           }