Advanced tables format, with merged of several cells, produce mix cells value in the exported PDF.

To reproduce please consider the flowing sample table, fill in a wiki page, then export to PDF (my export is attached)

|_.UserID     |_.Name|_.Group|_. attribute list  |
|Starting with| a    |   simple|row |
|\3=.IT               |<. align left|
|1|Artur Pirozhkov |/2.Users |>. align right|
|2|Vasya Rogov        |=. center |
|3|John Smith |Admin
               (root)|^. valign top |
|4|-          |Nobody
               (anonymous)|~. valign bottom|

About your application's environment

• Ruby version 1.9.3 (x86_64-linux)
• RubyGems version 1.8.24
• Rack version 1.4
• Rails version 3.2.8
• Active Record version 3.2.8
• Action Pack version 3.2.8
• Active Resource version 3.2.8
• Action Mailer version 3.2.8
• Active Support version 3.2.8
• Middleware Rack::Cache, ActionDispatch::Static, Rack::Lock, #ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x000000011f56e8, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::DebugExceptions, ActionDispatch::RemoteIp, ActionDispatch::Callbacks, ActiveRecord::ConnectionAdapters::ConnectionManagement, ActiveRecord::QueryCache, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, RedmineDmsf::NoParse, ActionDispatch::ParamsParser, ActionDispatch::Head, Rack::ConditionalGet, Rack::ETag, ActionDispatch::BestStandardsSupport, OpenIdAuthentication
• Application root /var/www/redmine-2.1.0
• Environment production
• Database adapter mysql2
• Database schema version 20120731164049