Enabling dead key on Ghostty/KDE

It's been some month since this issue land on GTK app: https://github.com/ghostty-org/ghostty/discussions/8899 Especially for me, I wanted to switch to Ghostty and when I wanted to use ~ I was left why a blank space. So according to the selected answer the most reliable way of fixing that on KDE, while waiting for a fix, is the following: first you need to install all needed package for fcitx5 to work then we update the config logout / login you can now enjoy your dead key working again! So: sud