Pasting Md tables keeps the first 2 header row cells empty

When pasting an Md format table - the initial 2 heading cells.

Example raw (copied from .Md editor):

| First Column | Second Column | 3rd Column set's |
|---|---|---|
| Name | First + Last Name | Example example |
| Number | Phone Number | 1234567 |
| Created At | When was this created (ISO Date) | 1970. 01. 01 |

Result in editor: