Yes, I get these issues in 0.8.2.If POSTS gets moved from one topic to another the POSTS count on the that topic page remains same. POST COUNT should decrements but It shows decremented count after page refresh. Steps to reproduce cant-move-to-same-topic error:
Create 'new TOPIC'.
Create 'another TOPIC' and create more than 2 REPLY to that topic.
Move one REPLY to new TOPIC.
Move second REPLY to new TOPIC.
cant-move-to-same-topic error will occur.