Issues with Sampler Track [Distorted Overlaps]

Why does mono retriggering distort overlaps, shouldn’t it sound clean?
I’ve sampled a clean sine wave to create an 808 bass. When set to one shot and playing back monophonically, retriggering different notes creates an audible distortion [at the start only] of almost every triggered note. Am I doing something wrong here or is the sampler track incapable of triggering cleanly between notes especially bass sounds?

Also, how do I do simple Sample edits to newly created samples in the sampler track, namely Normalize & Trim/Crop?

Can anyone help out with this?

For the issue, might want to file a thread under Issues and provide a project file or repro steps to illustrate the issue.

The rest, there has been already been suggested in the Suggestions forum.