Input subsystem: user-defined Compose sequences are ignored

[smartptr]

Hello,

I've got a few custom compose sequences defined in ~/.XCompose, and they seem to be ignored by Vivaldi snapshot, e.g.:

<Multi_key> <minus> <period> : "−" # MINUS SIGN (U+2212)

They work though in Chrome Beta and other applications.

Some other sequences like still work. The standard ibus “preentry” indicator doesn't appear, which also differs Vivaldi from other applications. “Use native window” setting didn't make any difference.

System details: default GNOME on Fedora 37 Workstation, Wayland, default ibus input method.

Thanks.