Base array object disappears after applying modifier

[Yrrah2-byte]

JMesh 1.8.1.8 in Blender 2.92

Primitive shape is applied as a Slice operation, then arrayed by use of the JMesh side panel, the original slice object disappears. This leaves a hole where the slice object was. Other arrayed sliced objects appear correctly.

However, using JMesh side panel Array command is the only way to array the primitive when using the mirror modifier.