Maybe it helps, I see the following message when viewing custom taxonomies
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'qtrans_modifyTermFormFor' not found or invalid function name in /home/otc/domains/otc.preview.websight.nl/public_html/wp-includes/plugin.php on line 503
This bug apparently not only affects menu’s and terms/tags…
Just tried to create some new (custom-)posts after updating to WP4.5
It looks like no language data gets saved, in the posts-list it says Languages are not set
