Was it the plan that Pokemon can no longer be searched for by their attacks and abilities? This applies both to the collection and to trade offers.
If you are looking for a Pokemon with a certain ability or attack, you will not find anything anymore. This was still possible before the update. Now you have to know the Pokemon already and choose the corresponding ability / attack yourself.
If you searched for <<Nidoqueen call>>, you only found the new Nidoqueens with that ability. Now you can not find anything anymore and if you are searching for <<Nideoqueen>> you will find all Nidoqueens and then have to look for the ones with << Queen's Call >> themselves. That's not the purpose of a search function, I think.