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Geometry Nodes: disconnecting socket disconnects a remote connection
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Description

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: rBb2c7ea6d82c4
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

Event Timeline

Germano Cavalcante (mano-wii) changed the task status from Needs Triage to Needs Information from User.Feb 26 2021, 6:36 PM

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: rBf7933d0744df)
Here is the file in question:


However there are more glitches with the join node easily reproducible, see the one below in an otherwise blank file:

Jacques Lucke (JacquesLucke) changed the task status from Needs Information from User to Confirmed.Mar 2 2021, 3:57 PM
Jacques Lucke (JacquesLucke) triaged this task as High priority.

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