Errors of selecting and cleaning full document

If I want select all document content and remove it, i will face this problems:

**Steps to reproduce case 1:**

1. Create new Document
2. Select next line
3. Press cmd+a

**Actual Result**

All documents will be selected

**Expected Result**

Cursor will move to first cell of table

**Steps to reproduce case 2:**

1. Create new Document
2. Add list of any type
3. Press Enter more 1 time to create next empty line
4. Press cmd+a
5. Press Backspace or cmd+Backspace (option+Backspace or Shift+Backspace work correctly)

**Actual Result**

Document will be cleaned

**Expected Result**

Lines of list will be joined unexpectially

_{Huly®: UBERF-8080}