add local jumping to shift tab

init.lua

@@ -478,7 +478,7 @@ cmp.setup {
     ['<S-Tab>'] = cmp.mapping(function(fallback)
       if cmp.visible() then
         cmp.select_prev_item()
-      elseif luasnip.jumpable(-1) then
+      elseif luasnip.locally_jumpable(-1) then
         luasnip.jump(-1)
       else
         fallback()