Yes, and you can fix it in two different ways. You can either have a variable assembly, meaning that you would add members to make the proportions work out—in which case you have no idea before the election how many representatives you're going to have or how many seats you're actually going to need in the building—or you can take away actual won seats from the parties that are overrepresented.
On September 19th, 2016. See this statement in context.