html export checkboxes don't work

Created by: drewbenn

If I export an html report and view it in Chromium 83 on Debian stable KDE, nothing happens when I uncheck the activites, categories or tags checkboxes. I observe that changing the js from 'attr' to 'prop' fixes the issue, like:

--- a/data/report_template.html
+++ b/data/report_template.html
@@ -297,13 +297,13 @@
 
             // determine if we will be doing any internal counting
             var keys = [];
-            if ($("#show_activities").attr("checked"))
+            if ($("#show_activities").prop("checked"))
                 keys.push("activity");
 
-            if ($("#show_categories").attr("checked"))
+            if ($("#show_categories").prop("checked"))
                 keys.push("category");
 
-            if ($("#show_tags").attr("checked"))
+            if ($("#show_tags").prop("checked"))
                 keys.push("tags");