--server argument causes crashes and hangs

It looks like adding the --server argument for instant-connect causes Minecraft to crash on 1.14. The server i'm connecting to is mc.gamster.org. On 1.14, the following crash is produced: 
https://pastebin.com/ES2K0qx4

 On previous versions of Minecraft, there's a chance of it hanging on "Connecting to server" indefinitely. The server is responsive, and connecting manually always works instantly.