#70 NTextElement highlight problem

[Jonathan Kilgour]

There is one NTextElement highlightg problem that can
be illustrated by inserting multiple NTextElements at
the same location into an NTextArea, where they all
represent the same object-model element but have
different non-null styles. Got that?

It's then often the case that clicking one of these
NTextElements only highlights every second NTextElement
where it should highlight them all. The workaround is
to add a spacer NTextElement between each styled
element that does not represent the same object-model
element.