Geometry Nodes: disconnecting socket disconnects a remote connection #85966

New Issue

System Information
Operating system: Darwin-20.2.0-x86_64-i386-64bit 64 Bits
Graphics card: AMD Radeon Pro 5500M OpenGL Engine ATI Technologies Inc. 4.1 ATI-4.2.13

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-02-23 23:15, hash: b2c7ea6d82
Worked: -

Short description of error
See movie: disconnecting an input from the join geometry multi-input socket sometimes disconnects a connection earlier in the node tree (hard to reproduce, but it happens occasionally.

Exact steps for others to reproduce the error
Schermopname 2021-02-24 om 21.53.58.mov

**System Information** Operating system: Darwin-20.2.0-x86_64-i386-64bit 64 Bits Graphics card: AMD Radeon Pro 5500M OpenGL Engine ATI Technologies Inc. 4.1 ATI-4.2.13 **Blender Version** Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-02-23 23:15, hash: `b2c7ea6d82` Worked: - **Short description of error** See movie: disconnecting an input from the join geometry multi-input socket sometimes disconnects a connection earlier in the node tree (hard to reproduce, but it happens occasionally. **Exact steps for others to reproduce the error** [Schermopname 2021-02-24 om 21.53.58.mov](https://archive.blender.org/developer/F9836079/Schermopname_2021-02-24_om_21.53.58.mov)

Added subscriber: @blenderrocket

Added subscriber: @mano-wii

Changed status from 'Needs Triage' to: 'Needs User Info'

I cannot reproduce this with either the latest stable or current development versions of Blender:

Can you provide a file showing the problem?

Please try the latest daily build: https://builder.blender.org/download/

I cannot reproduce this with either the latest stable or current development versions of Blender: Can you provide a file showing the problem? Please try the latest daily build: https://builder.blender.org/download/

Yes, it still happens with the latest build (2.93.0 Alpha, branch: master, commit date: 2021-02-26 21:23, hash: f7933d0744)
Here is the file in question: Donut geometry nodes.blend
However there are more glitches with the join node easily reproducible, see the one below in an otherwise blank file:
Schermopname 2021-02-27 om 10.46.10.mov

Yes, it still happens with the latest build (2.93.0 Alpha, branch: master, commit date: 2021-02-26 21:23, hash: `f7933d0744`) Here is the file in question: [Donut geometry nodes.blend](https://archive.blender.org/developer/F9836032/Donut_geometry_nodes.blend) However there are more glitches with the join node easily reproducible, see the one below in an otherwise blank file: [Schermopname 2021-02-27 om 10.46.10.mov](https://archive.blender.org/developer/F9846018/Schermopname_2021-02-27_om_10.46.10.mov)

Added subscriber: @JacquesLucke

Changed status from 'Needs User Info' to: 'Confirmed'

Setting as high priority, because this bug really should not exist and it can result in accidentally corrupting node trees.

Added subscriber: @FabianSchempp

This issue was referenced by a4f81c6838

This issue was referenced by a4f81c683896b9ed0c7ca8411c7796f7ccfe65f9

Changed status from 'Confirmed' to: 'Resolved'

Resolved by commit a4f81c6838

Resolved by commit a4f81c6838

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Geometry Nodes: disconnecting socket disconnects a remote connection #85966