The following errors are displayed in the console for the debugger page:

Uncaught TypeError: document.registerElement is not a function
at Object.UI.registerCustomElement (shell.js:3115)
at shell.js:3127
at shell.js:3129 devtools_app.js:9
Uncaught ReferenceError: SDK is not defined at devtools_app.js:9 inspector.js:2
Uncaught ReferenceError: SDK is not defined at inspector.js:2

Testing on Mac OS 10.14.6, Tizen Studio 3.6 and Chrome 80.0.3987.87 (Official Build) (64-bit). 

It seems that this error is related to a deprecated API with Chrome.
Is this a known issue, and is there an expected fix schedule?

-Heinz