Not to offer a complete review, but we recently re-implemented Delta Chat Desktop with Tauri (instead of Electron).
However, Electron remains our main distribution. Overall I think that Electron is much more mature as of now. Fewer annoying little bugs, more thorough documentation no important missing APIs (notification clicks) that we have to implement on our own.
I still think though that Tauri is the future.
Read more in this (not yet released) blog post: https://staging.delta.chat/1146/en/2025-07-20-delta-tauri-project