h3. Description

Layers can reference anchors generated from sublayers. This should not be allowed, as parents execute prior to their sublayers, meaning the data is not available.
h3. Repro Steps

1. Create a new layer
2. Create a sublayer Height Stamp
3. Add texture and place the stamp
4. Add an anchor to the output of the stamp

## Name this anchor

1. Return to the parent Layer and add a Fill mask modifier
2. Reference the channel: anchor name

h3. Actual Results

The layer fails to render
h3. Expected Results

The channel is not available.
h3. Versions
h4. Editor Version

 
h4. Git Repo Commit or Package Version

master repo 2022/10/05

dc9dff5