docs(troubleshooting): shadow DOM

Author: gabrieljablonski

docs/docs/troubleshooting.mdx

@@ -148,6 +148,13 @@ Check the examples for the [`anchorSelect`](./examples/anchor-select) and [`rend
 <Tooltip id="my-tooltip" />
 ```
 
+## The tooltip doesn't work when using a Shadow DOM
+
+ReactTooltip currently does not support Shadow DOM usage, but it is on our roadmap.
+
+See [issue #1029](https://github.com/ReactTooltip/react-tooltip/issues/1029) and [PR #1068](https://github.com/ReactTooltip/react-tooltip/pull/1068) for more info.
+
+
 ## `Can't import the named export 'xxx' from non EcmaScript module (only default export is available)`
 
 This problem can be fixed by adding a rule to your `webpack.config.js` file (or equivalent).