Reproduction steps: 1. Visit https://chemical-willow.glitch.me in Safari Technology Preview (Release 49 (Safari 11.2, WebKit 13606.1.3.3)) 2. Open the console and look at the logs Expected behavior: The logs should contain all args passed into the console functions, resulting in the following logs for each console function(group and groupCollapsed). ``` 1 {key: "1"} 1 2 1 {key: "2"} demo demo 2 demo {key: "2"} ``` Actual Behavior: Safari seems to only log the first input. ``` 1 Object 1 1 demo demo demo ``` Find screenshots of Chrome, Firefox and Safari console groups: https://imgur.com/a/h9MC7