Hey all! It seems like I blundered here. We’re planning to introduce overlapping clips at some point in the future, which would allow for things like non-destructively adjusting timing of inserted clips, switching between different takes and things like that. As we had to refactor pasting for this release anyway to work with stretched clips, we decided to go with the behavior you now see as a preparatory step towards a world where overlapping clips exist.
You’re absolutely right though that, as things are right now, there isn’t really any value in this behavior for spoken word projects. We will therefore add an option in 3.4.2 which reverts to the old behavior by default, and gives an option in the preferences to use the current one if you want to (which can be somewhat useful in music contexts, fwiw). 3.4.1 is scheduled to release tomorrow (fixing urgent crashes and bugs), 3.4.2 should follow in the coming weeks.