The bug
If a single unit of tripwire is placed down and is not connected to any adjacent blocks, it will appear as an orthogonal line. This is inconsistent with other blocks with similar such connection behaviour: they either appear as a single centered unit (iron bars, glass panes, fences, walls, redstone wire after toggling) or connected in all directions (redstone wire by default).
How to reproduce
Create a floor out of dark blocks
Place down a single piece of string
Expected results
The placed string would either appear as a single centered dot (for consistency with most orthogonally connecting blocks) or a cross (for visibility and for consistency with redstone dust).
Actual results
It appears as an orthogonal line instead.
How to fix
This is completely down to the blockstates file for tripwire. This issue can be fixed entirely by editing that alone. I can provide an example resource pack if desired.
Attachments
Comments 4
This report is selective in its appeal to examples: rails connect but do not appear as a dot or cross when placed by themselves.
Rails are different, since their connection types aren't a binary yes/no per horizontal direction: you can't have T-shaped rails, for example.
Confirmed, but as pointed out the dot design is not favorable for tripwire; it's already hard to see.