[Bug]: Connection preview line persists on Safari after drop on empty canvas

[byrney]

Affected Version

18.3.0

Reproduction URL (StackBlitz, GitHub, etc.)

https://flow.foblex.com/examples/limiting-connections

Steps to Reproduce

On safari, drag from a connector to create an edge but drop it onto the canvas so no edge is created.
For most drop positions part of the preview line remains on the canvas:

Environment

• Safari 26.5 (21624.2.5.11.4) on macOS 26.5
• Foblex Flow: latest (reproduces on the docs example)
• I can't reproduce on Chrome, seems to be safari only.

Expected Behavior

I expected the preview line to be removed because I did not create a connection.

Actual Behavior

Part of the line remains.

Acceptance Criteria

No response

Browser

Safari

[siarheihuzarevich]

Thanks for catching this and for verifying the fix in Safari 🙌

Shipped in v19.0.0 (#314): the canvas compositing layer repaints once after the preview is hidden, which clears the leftover ink WebKit doesn't invalidate on its own. The workaround is scoped to WebKit - other engines skip it entirely.