Fix failing unhangRange test case with inlines (#4814)

* Add failing unhangRange test case

* Fix failing inline case?

* fix lint

packages/slate/src/interfaces/editor.ts

@@ -1656,7 +1656,7 @@ export const Editor: EditorInterface = {
       match: n => Editor.isBlock(editor, n),
     })
     const blockPath = endBlock ? endBlock[1] : []
-    const first = Editor.start(editor, [])
+    const first = Editor.start(editor, start)
     const before = { anchor: first, focus: end }
     let skip = true
 

packages/slate/test/interfaces/Editor/unhangRange/inline-range-normal.tsx

@@ -0,0 +1,34 @@
+/** @jsx jsx */
+import { Editor } from 'slate'
+import { jsx } from '../../..'
+
+export const input = (
+  <editor>
+    <block>
+      <text>Block before</text>
+    </block>
+    <block>
+      <text>
+        <anchor />
+        Some text before{' '}
+      </text>
+      <inline void>
+        <focus />
+      </inline>
+      <text />
+    </block>
+    <block>
+      <text>Another block</text>
+    </block>
+  </editor>
+)
+
+export const test = editor => {
+  const range = Editor.unhangRange(editor, editor.selection)
+  return range
+}
+
+export const output = {
+  anchor: { path: [1, 0], offset: 0 },
+  focus: { path: [1, 1, 0], offset: 0 },
+}