What are the disadvantages of Uniswap?

As a keen observer in the field of cryptocurrency and finance, I'm interested in delving deeper into the potential pitfalls of Uniswap. Could you elaborate on some of the disadvantages associated with this decentralized exchange? Are there any significant risks users should be aware of, such as security vulnerabilities or transaction delays? Also, how does Uniswap's liquidity compare to other exchanges, and does it pose any challenges for traders? Understanding these shortcomings would help investors make more informed decisions when navigating the crypto market.