From 206cd8c280a9ecfb17e4311aafc95aecd7eccf7c Mon Sep 17 00:00:00 2001
From: Ryan Cramer <ryan@processwire.com>
Date: Mon, 10 Jul 2023 10:11:21 -0400
Subject: [PATCH] Fix issue processwire/processwire-issues#1780

---
 .../Process/ProcessPageLister/ProcessPageLister.module    | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/wire/modules/Process/ProcessPageLister/ProcessPageLister.module b/wire/modules/Process/ProcessPageLister/ProcessPageLister.module
index 660409a5..1c72f7a9 100644
--- a/wire/modules/Process/ProcessPageLister/ProcessPageLister.module
+++ b/wire/modules/Process/ProcessPageLister/ProcessPageLister.module
@@ -617,8 +617,12 @@ class ProcessPageLister extends Process implements ConfigurableModule {
 			try {
 				$is->processInput($input->post);
 				$selector = $this->sessionGet("selector");
-				if($selector != $is->value) {
-					$this->sessionSet("selector", $is->value);
+				$isSelector = (string) $is->value; // selector from InputfieldSelector
+				if($selector === $this->defaultSelector && !strlen($isSelector)) {
+					// do not reset if selector matches default selector
+				} else if($selector != $isSelector) {
+					// reset
+					$this->sessionSet("selector", $isSelector);
 					$this->sessionSet("pageNum", 1);
 					$input->setPageNum(1);
 				}