set req.url = std.querysort(req.url); kills wp-admin section

When set req.url = std.querysort(req.url); option is in “default.vcl” nothing in wp-admin section works. I cannot even click on buttons.

Just an example: I click on “edit comment” or “answer comment” or “approve comment” and nothing happens.

1) Whats the purpose of “set req.url = std.querysort(req.url);” ?? What does it do?

2) Why is this error happening?

3) I got around it with the followin: Is this code ok?

if (req.url !~ “wp-admin”) {
set req.url = std.querysort(req.url);
}