/title Command will not work!

In Minecraft when I use the "/title" command nothing happens. I've tested other commands, and they all work. I used this Minecraft Command Generator website, to ease doing the commands (here is the link; https://minecraftcommand.science/title-generator) and nothing happens. I've tried doing the commands myself, and still nothing happens. I also tried the other generated commands on their website, and they all work just fine. I don't know if anyone else is having this problem, but I sure am. I'm reporting this as a bug, as I cannot find the solution myself.