Spaced separator line of pipe tables

[Conaclos]

Playing with the live sandbox by copy-pasting some markdown code, I noticed that the following pipe table was not correctly rendered:

| type parameter | meaning |
| -------------- | ------- |
| E              | Element |
| K              | Key     |
| T              | Type    |
| V              | Value   |

Indeed, Djot did not render the separator line because of the surrounding spaces.
This is really inconvenient since formatter such as prettier automatically surround separator with spaces.

The following pipe table is correctly rendered:

| type parameter | meaning |
|----------------|---------|
| E              | Element |
| K              | Key     |
| T              | Type    |
| V              | Value   |

Is this intentional?
The spec could it be relaxed in order to accept spaced separator line?