fix: sort Issues chronologically (#20741)

diff --git a/erpnext/support/doctype/issue/issue.json b/erpnext/support/doctype/issue/issue.json
index 53af80c..6641f56 100644
--- a/erpnext/support/doctype/issue/issue.json
+++ b/erpnext/support/doctype/issue/issue.json
@@ -366,7 +366,7 @@
  "icon": "fa fa-ticket",
  "idx": 7,
  "links": [],
- "modified": "2020-02-18 21:26:35.636013",
+ "modified": "2020-02-26 02:19:49.477928",
  "modified_by": "Administrator",
  "module": "Support",
  "name": "Issue",
@@ -387,9 +387,9 @@
  "quick_entry": 1,
  "search_fields": "status,customer,subject,raised_by",
  "sort_field": "modified",
- "sort_order": "ASC",
+ "sort_order": "DESC",
  "timeline_field": "customer",
  "title_field": "subject",
  "track_changes": 1,
  "track_seen": 1
-}
\ No newline at end of file
+}