Nodes 2.0 break Mask Rect Area node canvas

[andreszs]

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 (see how)

What happened?

Whenever Nodes 2.0 is enabled, the ComfyUI-Impact-Pack Mask Rect Area nodes no longer show the preview canvas.

Steps to Reproduce

1. Install ImpactPack
2. Add Mask Rect Area node
3. Enable nodes 2.0

How is this affecting you?

Visual/UI issue only

ComfyUI Frontend Version

1.34.9

Browser

Firefox

Console Errors

Logs

Additional Context

┆Issue is synchronized with this Notion page by Unito

[coderabbitai]

🔗 Similar Issues

Related Issues

• "Open in Mask Editor | Image Canvas" doesn't open (in 1.33.5) #6824

🔗 Related PRs

#7088 - selection rectangle for vueNodes [merged]
#7146 - fix: vue nodes preview node to match lg and add node when clicked [merged]
#7178 - fix: vue nodes image preview widget, better multi image gallery support [merged]
#7302 - fix: node shape not reactive in vueNodes mode [merged]
#7394 - fix: work around Chrome GPU bug causing severe lag when dragging links [merged]

👤 Suggested Assignees

• jtydhr88
• simula-r
• whitespace-rebel

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[dosubot]

This is a known issue: enabling Nodes 2.0 switches ComfyUI to a new Vue-based rendering system, which breaks compatibility with custom nodes that rely on direct canvas rendering or DOM injection—like the Mask Rect Area node from Impact Pack. As a result, the preview canvas disappears when Nodes 2.0 is on. This problem affects many custom nodes and some core nodes, and is widely discussed in the issue tracker (example, example).

There’s no simple fix or patch right now. The most reliable workaround is to disable Nodes 2.0 and use the classic UI for full custom node compatibility. Some users also pin the frontend to version 1.32.9, but this can cause other features or previews to stop working. The maintainers are aware and are actively working on improving custom node compatibility in future releases—watch the release notes and issue tracker for updates.

To reply, just mention @dosu.

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