Hierarchical bus ERC "label not connected to anything" yet seems working

[chichak]

In a hierarchical schematic like this:

the ERC gives me these errors:

***** Sheet /

***** Sheet /in/
[label_dangling]: Label not connected to anything
    @(125.73 mm, 92.71 mm): Label 'a1'

[label_dangling]: Label not connected to anything
    @(125.73 mm, 95.25 mm): Label 'a2'

***** Sheet /out/
[label_dangling]: Label not connected to anything
    @(119.38 mm, 102.87 mm): Label 'a2'

[label_dangling]: Label not connected to anything
    @(119.38 mm, 100.33 mm): Label 'a1'

 ** ERC messages: 4  Errors 4  Warnings 0

yet the netlist seems correct, pins are connect properly on the PCB:

What am I missing here?

[mf_ibfeew]

What am I missing here?

you missed to give us the version-information: for such questions it is always recommended to provide the used Kicad-version (and the used OS).
A similar error was reported for some of the older v6.0x-versions, but it should be resolved with v6.0.9/v6.0.10.
So probably try to update your installation and test again.

[chichak]

right - this happend on Kicad 6.0.9 from/on debian (amd64) - sorry for not mentioning.

with 6.0.10 my MRE passed, however kicad segfaults on my real project
I guess I need debugging symbols from here?

[hermit]

Generally if it segfaults and you are able to share the project with the developers they would like to see it.

[chichak]

I created an issue, thanks for the relies!

[BlackCoffee]

I’m ‘Not’ suggesting that there is no bug. However, I seem to never have problems if I label things as they’re labeled on my scratch-pad (done when I’m sitting with cup of Black Coffee).

In other-words, if I label stuff on Paper to keep them straight in my Head, then duplicate the labels in Kicad’s schematic, all seems to work well… Perhaps I’m just lucky (and, yes, there are Two kinds of luck…). No DRC errors or warnings… Indicating that, aside from particular Labels/Nets, there is No connection error…

Example: