The diagram below doesn't produce my intended graph.

flowchart LR
    dev---ops

See live editor

The behaviour ought to be the same as when using

flowchart LR
    dev --- ops

or

flowchart LR
    Dev---Ops

This issue is by design and I don't see an easy way to fix it except breaking the current syntax of --o-arrows or ----no-arrows links.

The same goes for

flowchart LR
    dev---xerxes