Apply overflow value to every parent group of node

Closes #12960
(grafted from 5ec515d166696653b07dd2ad61a62377b9717899)

--HG--
branch : 7.0

sao/src/common.js

@@ -3674,7 +3674,7 @@
         el.closest('.modal-body').css('overflow', overflow);
         el.closest('.navbar-collapse.in').css('overflow-y', overflow);
         el.closest('.content-box').css('overflow-y', overflow);
-        el.closest('fieldset.form-group_').css('overflow', overflow);
+        el.parents('fieldset.form-group_').css('overflow', overflow);
         Sao.common.scrollIntoViewIfNeeded(el);
     };