Currently, the stroke-dasharray isn't configurable for pipes when using the pipe tool, and the default dash array looks like a monitor display glitch
(it's set to 8, 0.75 for a 1px width pipe, and the 0.75 is only visible every 2nd iteration due to pixel rounding...)
Example (1px width pipe set to be dashed):

I don't believe there's a way that I can hack around this to make it look less like a glitch...
The other question I have is, why is the stroke-dasharray set to a repeating sequence (8, 0.75, 8, 0.75, ....) instead of just 8, 0.75 which achieves the same thing?
Dev tools:
seems like it ends on 3.5 for some reason, you can probably override this with css
You can override it, but it will override for all pipes, not just the dashed pipes. I can't find any way to:
- single out particular pipes, or
- change the dash array for all pipes set to dashed (without affecting non-dashed pipes)
There doesn't seem to be anything that I can use to filter the CSS selector, unless I'm just missing something
im sure there are several ways to select specific pipes.
but a generalish one i could be (untested and def not most optimal)
.ia_pipeSegment[style*="stroke-dasharray: 8, 0.75, 8, 0.75"]{
stroke-dasharray: 8, 0.75 !important;
}