When typing a card name in the card search textbox, if you have spaces preceding the character name, even if you click on the card name in the card drowpdown it says that a card with that name doesn't exist.

True that.

Also, another small issue:
when editing a comment, more specifically trying to put selected text as a Magic Card (selected text being a cards name), it reacts as if the editing is done, but without applying the changes.

P.S.: Using Opera :P. THANK YOU!