Time with tick callback return null still shows grid line

[gakinson]

Expected Behavior

Grid line is only showed on the chart if the tick callback returns a value

Current Behavior

Grid line is showing when the tick callback returns null or undefined. Also the tick label is showing "undefined"

Possible Solution

Steps to Reproduce

https://codepen.io/gakinson/pen/LYWJgJZ

Context

Environment

• Chart.js version: ^3.3.2
• Time adapter version: chartjs-adapter-luxon - ^1.0.0
• Browser name and version: chrome 91.0.4472.77
• Link to your project:

[gakinson]

Added codepen