Index: openacs-4/packages/acs-subsite/tcl/apm-callback-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/tcl/apm-callback-procs.tcl,v
diff -u -r1.13.2.6 -r1.13.2.7
--- openacs-4/packages/acs-subsite/tcl/apm-callback-procs.tcl	28 Oct 2020 15:39:19 -0000	1.13.2.6
+++ openacs-4/packages/acs-subsite/tcl/apm-callback-procs.tcl	8 Feb 2023 12:35:55 -0000	1.13.2.7
@@ -18,6 +18,13 @@
 
 } {
     subsite::default::create_app_group -package_id $package_id
+
+    #
+    # Set the theme-related parameters into the subsite
+    #
+    subsite::set_theme \
+        -subsite_id $package_id \
+        -theme [subsite::get_theme -subsite_id $package_id]
 }
 
 ad_proc -private subsite::package_install {} {} {
Index: openacs-4/packages/acs-subsite/tcl/subsite-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-subsite/tcl/subsite-procs.tcl,v
diff -u -r1.68.2.25 -r1.68.2.26
--- openacs-4/packages/acs-subsite/tcl/subsite-procs.tcl	6 Feb 2023 15:01:09 -0000	1.68.2.25
+++ openacs-4/packages/acs-subsite/tcl/subsite-procs.tcl	8 Feb 2023 12:35:55 -0000	1.68.2.26
@@ -855,13 +855,12 @@
         foreach {var param} $settings {
             set default [string trim [set $var]]
             set value   [string trim [parameter::get -parameter $param -package_id $subsite_id]]
-            regsub -all -- {\s+} $value { } value
-            regsub -all -- {\s+} $default { } default
             #
-            # An empty value is superseded by the default. An empty
-            # default does not prescribe any value.
+            # Normalize whitespace to one single space.
             #
-            set collect_p [expr {$value eq "" || $default eq "" || $default eq $value}]
+            regsub -all -- {\s+} $value { } value
+            regsub -all -- {\s+} $default { } default
+            set collect_p [expr {$default eq $value}]
             if {!$collect_p} {
                 ns_log notice "theme '$theme' parameter $var differs on subsite '$subsite_id': default '$default' actual value '$value'"
                 break