When CSS variable has any uppercase characters, it doesn't show up in the Computed panel. It works fine in Chrome. Steps: 1. Open data:text/html;,<body style="--A:1;--b:2"> 2. Inspect <body> 3. Open Computed panel 4. Expand Variables section Expected: --A: 1 --b: 2 Actual: --b: 2 Notes: This bug is significant because some people use camelCase for their variables.
<rdar://problem/62897137>
Created attachment 466610 [details] Screenshot of confirmed fix This was fixed sometime ago. Test case (run in the address bar) ``` data:text/html,<h1%20style="--A:1;--b:2">Test</h1> ```