Both of these errors are known issues. The Clefairy distribution dates have already been fixed in the PKHeX Development build, and will be resolved in the next stable release.
Please only report issues if they can be reproduced in the most recent dev build, and you've made sure it's not user error.
The Dracovish issue is with the wondercard itself, which contains an error. This issue is on GameFreak's end, not PKHeX's. You can resolve it by creating a folder named mgdb in the same directory as PKHeX.exe, and putting the "fixed" wc8 file in that folder. To my knowledge, this fixed wondercard will also be included in the next stable release.