diff --git a/core/constants.py b/core/constants.py
index cbe83b5..3d6a47c 100644
--- a/core/constants.py
+++ b/core/constants.py
@@ -4,7 +4,7 @@ from data.sig import SIG
 
 # General software
 SOFTWARE_NAME = "Spothole by M0TRT"
-SOFTWARE_VERSION = "1.3"
+SOFTWARE_VERSION = "1.4-pre"
 
 # HTTP headers used for spot providers that use HTTP
 HTTP_HEADERS = {"User-Agent": SOFTWARE_NAME + ", v" + SOFTWARE_VERSION + " (operated by " + SERVER_OWNER_CALLSIGN + ")"}
diff --git a/templates/about.html b/templates/about.html
index 7dac68d..6b53a7d 100644
--- a/templates/about.html
+++ b/templates/about.html
@@ -69,7 +69,7 @@
     <p>This software is dedicated to the memory of Tom G1PJB, SK, a friend and colleague who sadly passed away around the time I started writing it in Autumn 2025. I was looking forward to showing it to you when it was done.</p>
 </div>
 
-<script src="/js/common.js?v=1780672649"></script>
+<script src="/js/common.js?v=1780681952"></script>
 <script>$(document).ready(function() { $("#nav-link-about").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}
\ No newline at end of file
diff --git a/templates/add_spot.html b/templates/add_spot.html
index 80fdc18..74870fd 100644
--- a/templates/add_spot.html
+++ b/templates/add_spot.html
@@ -69,8 +69,8 @@
 
 </div>
 
-<script src="/js/common.js?v=1780672649"></script>
-<script src="/js/add-spot.js?v=1780672649"></script>
+<script src="/js/common.js?v=1780681952"></script>
+<script src="/js/add-spot.js?v=1780681952"></script>
 <script>$(document).ready(function() { $("#nav-link-add-spot").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}
\ No newline at end of file
diff --git a/templates/alerts.html b/templates/alerts.html
index c9dc8ed..4ddb4bb 100644
--- a/templates/alerts.html
+++ b/templates/alerts.html
@@ -70,8 +70,8 @@
 
 </div>
 
-<script src="/js/common.js?v=1780672649"></script>
-<script src="/js/alerts.js?v=1780672649"></script>
+<script src="/js/common.js?v=1780681952"></script>
+<script src="/js/alerts.js?v=1780681952"></script>
 <script>$(document).ready(function() { $("#nav-link-alerts").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}
\ No newline at end of file
diff --git a/templates/bands.html b/templates/bands.html
index a672224..42d8119 100644
--- a/templates/bands.html
+++ b/templates/bands.html
@@ -76,9 +76,9 @@
 <script>
     let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
 </script>
-<script src="/js/common.js?v=1780672649"></script>
-<script src="/js/spotsbandsandmap.js?v=1780672649"></script>
-<script src="/js/bands.js?v=1780672649"></script>
+<script src="/js/common.js?v=1780681952"></script>
+<script src="/js/spotsbandsandmap.js?v=1780681952"></script>
+<script src="/js/bands.js?v=1780681952"></script>
 <script>$(document).ready(function() { $("#nav-link-bands").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}
\ No newline at end of file
diff --git a/templates/base.html b/templates/base.html
index a874d0a..e25c601 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -1,6 +1,6 @@
 {% extends "skeleton.html" %}
 {% block head_extra %}
-    <link rel="stylesheet" href="/css/style.css?v=1780672649" type="text/css">
+    <link rel="stylesheet" href="/css/style.css?v=1780681952" type="text/css">
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet"
           integrity="sha384-sRIl4kxILFvY47J16cr9ZwB07vP4J8+LH7qKQnuqkuIAvNWLzeN8tE5YBujZqJLB" crossorigin="anonymous">
     <link href="/fa/css/fontawesome.min.css" rel="stylesheet" />
@@ -19,9 +19,9 @@
             integrity="sha384-L1eE4eD41kpBIWe2I0eHy+GnEUC4RIpcvibVW2JCminuPlTl+2Bc528iPdVMg5Dn"
             crossorigin="anonymous"></script>
 
-    <script src="https://misc.ianrenton.com/jsutils/utils.js?v=1780672649"></script>
-    <script src="https://misc.ianrenton.com/jsutils/ui-ham.js?v=1780672649"></script>
-    <script src="https://misc.ianrenton.com/jsutils/geo.js?v=1780672649"></script>
+    <script src="https://misc.ianrenton.com/jsutils/utils.js?v=1780681952"></script>
+    <script src="https://misc.ianrenton.com/jsutils/ui-ham.js?v=1780681952"></script>
+    <script src="https://misc.ianrenton.com/jsutils/geo.js?v=1780681952"></script>
 {% end %}
 {% block body %}
 <div class="container">
diff --git a/templates/conditions.html b/templates/conditions.html
index 660c3f8..368c6f9 100644
--- a/templates/conditions.html
+++ b/templates/conditions.html
@@ -271,8 +271,8 @@
 </div>
 
 <script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.9/dist/chart.umd.min.js"></script>
-<script src="/js/common.js?v=1780672649"></script>
-<script src="/js/conditions.js?v=1780672649"></script>
+<script src="/js/common.js?v=1780681952"></script>
+<script src="/js/conditions.js?v=1780681952"></script>
 <script>$(document).ready(function () {
     $("#nav-link-conditions").addClass("active");
 }); <!-- highlight active page in nav --></script>
diff --git a/templates/map.html b/templates/map.html
index 334d8d5..55f85ef 100644
--- a/templates/map.html
+++ b/templates/map.html
@@ -94,9 +94,9 @@
 <script>
     let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
 </script>
-<script src="/js/common.js?v=1780672649"></script>
-<script src="/js/spotsbandsandmap.js?v=1780672649"></script>
-<script src="/js/map.js?v=1780672649"></script>
+<script src="/js/common.js?v=1780681952"></script>
+<script src="/js/spotsbandsandmap.js?v=1780681952"></script>
+<script src="/js/map.js?v=1780681952"></script>
 <script>$(document).ready(function() { $("#nav-link-map").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}
\ No newline at end of file
diff --git a/templates/spots.html b/templates/spots.html
index 38cd070..d98b3ff 100644
--- a/templates/spots.html
+++ b/templates/spots.html
@@ -104,9 +104,9 @@
 <script>
     let spotProvidersEnabledByDefault = {% raw json_encode(web_ui_options["spot-providers-enabled-by-default"]) %};
 </script>
-<script src="/js/common.js?v=1780672649"></script>
-<script src="/js/spotsbandsandmap.js?v=1780672649"></script>
-<script src="/js/spots.js?v=1780672649"></script>
+<script src="/js/common.js?v=1780681952"></script>
+<script src="/js/spotsbandsandmap.js?v=1780681952"></script>
+<script src="/js/spots.js?v=1780681952"></script>
 <script>$(document).ready(function() { $("#nav-link-spots").addClass("active"); }); <!-- highlight active page in nav --></script>
 
 {% end %}
\ No newline at end of file
diff --git a/templates/status.html b/templates/status.html
index a38542c..75320cd 100644
--- a/templates/status.html
+++ b/templates/status.html
@@ -59,8 +59,8 @@
     </div>
 </div>
 
-<script src="/js/common.js?v=1780672649"></script>
-<script src="/js/status.js?v=1780672649"></script>
+<script src="/js/common.js?v=1780681952"></script>
+<script src="/js/status.js?v=1780681952"></script>
 <script>
     $(document).ready(function() { $("#nav-link-status").addClass("active"); }); <!-- highlight active page in nav -->
 </script>
diff --git a/webassets/js/spots.js b/webassets/js/spots.js
index 104ce87..d1d2ddb 100644
--- a/webassets/js/spots.js
+++ b/webassets/js/spots.js
@@ -4,6 +4,14 @@ let restartSSEOnErrorTimeoutId;
 // Table row count, to alternate shading
 let rowCount = 0;
 
+// Set up a listener to close the SSE connection nicely when we navigate away from the page, to prevent console errors
+// and keep things nice and tidy for the server.
+window.addEventListener('beforeunload', function() {
+    if (evtSource != null) {
+        evtSource.close();
+    }
+});
+
 // Load spots and populate the table.
 function loadSpots() {
     // If we have an ongoing SSE connection, stop it so it doesn't interfere with our reload