[Bug]: Link release action 'no action' behaves inconsistently between SubgraphInputNode and regular nodes

[christian-byrne]

Prerequisites

• I am running the latest version of ComfyUI
• I have searched existing issues to make sure this isn't a duplicate
• I have tested with all custom nodes disabled

What happened?

When the link release action setting is set to "no action", there's an inconsistent behavior between SubgraphInputNode connections and regular node-to-node connections:

1. SubgraphInputNode → Node connection: When disconnecting from the node's slot and dropping on empty canvas, the link snaps back to the slot (reverts the disconnection)
2. Node → Node connection: When performing the same action with the same setting, the connection is broken/deleted

This inconsistency makes the "no action" setting behave unexpectedly depending on the type of connection.

Steps to Reproduce

1. Go to Settings and set "Link Release Action" to "No Action"
2. Create or enter a subgraph
3. Connect a SubgraphInputNode output to any regular node input
4. Exit the subgraph to see the parent view
5. Try to disconnect the link by dragging from the node's input slot and dropping on empty canvas
6. Observe: The link snaps back to the slot (connection is preserved)
7. Now create two regular nodes and connect them
8. Try to disconnect the link by dragging from one slot and dropping on empty canvas
9. Observe: The connection is broken/deleted (inconsistent with step 6)

How is this affecting you?

Feature doesn't work as expected

ComfyUI Frontend Version

1.26.0

Browser

Chrome/Chromium

Console Errors

No console errors are generated - this is a behavioral inconsistency issue.

Additional Context

The root cause appears to be in . The method (line 631) doesn't dispatch a event like other drop methods do:

• dispatches
• dispatches
• dispatches
• dispatches nothing

This missing event dispatch prevents the link release action handler from being triggered for SubgraphInputNode/SubgraphOutputNode connections, causing the inconsistent behavior.

The fix would involve adding an appropriate event dispatch in the method to ensure consistent behavior across all node types.

┆Issue is synchronized with this Notion page by Unito