There's quite an uncertainty on what's going to happen. UK may leave EU without a deal, or get a delay, or not leave at all anymore.
I think that this kind of news can affect the market only when one of the directions get a better chance than the others.
I would have thought the rejection would have given most investors a clear indication where the final decision is going? The status quo will not influence the markets a lot, but an approved "Brexit" would have had a significant impact on investors.
The UKs government indecision is really hurting their reputation in the financial world at the moment. This is similar to the SEC in the USA and their indecision on the Bitcoin ETFs.
Both of these decisions will have a significant impact on the Bitcoin price.