What are the drawbacks of Uniswap?

Could you elaborate on the disadvantages of Uniswap? It seems to be a popular platform in the cryptocurrency sphere, but I'm curious about its limitations. Does it face any scalability issues? Are there concerns about its transaction fees or security? Also, how does it compare to other decentralized exchanges in terms of liquidity and user experience? Understanding these aspects would help me make a more informed decision about using Uniswap.