Why Xcompose shortcuts is not working in a specific flatpak app?

Im using obsidian flatpak in silverblue and the stuffs in .xcompose is not working there. Should i need to active something in flatseal ?
i use a keyboard that is not from my main language, so xcompose is crucial for me .

Part of the answer:

  • In X11, adding the following to the run command works fine: --filesystem=~/.XCompose:ro
  • In Wayland, it does not… ¯\_(ツ)_/¯
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