I ran into a similar problem in Manjaro.
I was able to run Fcitx5 at Wayland in Manjaro and will share how.
Please let me know if this method is deprecated
My Environment
Operating System: Manjaro Linux
KDE Plasma Version: 6.0.5
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.1
Kernel Version: 6.6.34-1-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 12 × 12th Gen Intel® Core™ i5-1235U
Memory: 23.2 GiB of RAM
Graphics Processor: Mesa Intel® Graphics
Manufacturer: LENOVO
Product Name: 21E3CTO1WW
System Version: ThinkPad E14 Gen 4
I couldn’t type Japanese with Inkdrop installed from snap, Wayland was the culprit.
The input method used is Fcitx5-skk.
Inkdrop was installed from AUR.
I have never used Ubuntu and do not know if a system like AUR exists. Sorry…
You will find inkdrop.desktop in /usr/share/applications. Edit this.
I think it could be added by default if the Arch users of Inkdrop want it. However, it can cause unnecessary glitches.
Therefore, how about writing an example of using Inkdrop in Wayland in the official documentation?
Each distribution may require a different response.
I would like to see Electron officially support Wayland…