The only missing feature that is being mentioned here is the "hidden buffers". Undo is working properly.

A related comment on buffer management from the author of the project: https://github.com/martanne/vis/issues/300#issuecomment-2160...

I managed to live without hidden buffers so far, though I accept that they are convenient.

Yeah. I love vim's persistent undo. Combine that with the undotree[0] plugin and you never have to worry about losing changes.

It would be really hard for me to switch to an editor without persistent undo.

[0] https://github.com/mbbill/undotree