Issue 1:
Unplayable minions due to Freezing Trap has been reported and is a Known issue.
There is a possible workaround:
Issue 2:
Cards put into your deck also shuffles the deck.
Confirmation about shuffle: https://youtu.be/fXoB1bbpqRk?list=UUbt1SGMrWj5Q7TMXAfmTERQ&t=551
Both reported and answered multiple times. Help by searching first before posting to reduce duplicate issue threads.
Also in future, one issue one thread. It is against the forum rules to go off topic even if you create the thread.