enable transition for extenstion?

[txtl]

I implemented an extension to render dash color for PathLayer, and I've not been able to get transition to work even though I use transition: true, in addInstanced:

attributeManager.addInstanced({
instanceDashColors: {size: this.props.colorFormat.length, transition: true, accessor: 'getDashColor'}
});

Is there anything else needed to enable transition?

Thanks,

[Pessimistress]

Please create a Codepen/Code Sandbox.