Suspected case of routing database corruption again.

[vanepp]

Current Behaviour

This sketch

Untitled Sketch 2.fzz.zip

from this rather long forum post starting about here

https://forum.fritzing.org/t/battery-expansion-shield-18650-v3/26791/87

I think indicates routing database corruption in 1.0.4. Unfortunately, as usual, we don't have any idea what caused the original corruption. I'm hoping that looking at the .fzz file may give you some clue to what happened to cause this. Here I right clicked on the J7 pin with the green arrow. The path lights as expected (circled in green) but an isolated via with no apparent connection is indicated as part of this net (which I suspect is the routing data base corruption.)

the green haze on the trace near the via that it thinks belongs to this net may also be a clue.

now delete the top layer wire in order to move the bottom layer wire to the top layer and allow the removal of 2 vias and extending the line on the bottom layer,

but the move the bottom layer wire to the top layer goes wrong.

the wire moves to the via (that Fritzing thinks is part of this net) and the line segment it used to go to is now disconnected which is what makes me think this is routing database corruption again.
As far as I know the sketch was created on 1.0.4 and I am working on it on 1.0.4 so both sides are on the latest version. Hopefully the .fzz file will shed some illumination on what may have gone wrong.

Build:
Version 1.0.4
(CD-2088-0-a8c6ef7c 2024-10-07) 64 [Qt 6.5.3]

Operating System:
Windows 10

Steps to reproduce:

See ## Current Behaviour

Expected Behaviour

Hopefully correct operation i.e the trace connects correctly.