besides the vmethod/text failure due to behavior changes in split() 2.24 also suffers from hash randomization in Plugin::Image.

Here is a simple patch. I think it is important to have a well-defined order in the tag method's output to make caching possible.

--- lib/Template/Plugin/Image.pm~       2011-12-20 08:41:35.000000000 +0100
+++ lib/Template/Plugin/Image.pm        2013-05-25 13:43:30.658308009 +0200
@@ -165,8 +165,8 @@
         unless defined $options->{ alt };
 
     if (%$options) {
-        while (my ($key, $val) = each %$options) {
-            my $escaped = escape( $val );
+        for my $key (sort keys %$options) {
+            my $escaped = escape( $options->{$key} );
             $tag .= qq[ $key="$escaped"];
         }
     }