Hola Michael

Ver is not an irregular verb in the imperative for tú. The verbs you see inside that lesson are the irregular ones. 

We say that a verb is regular in the imperative form for tú when it coincides with the conjugation of the 3rd person singular (he/she) in the present.

Ella ve el desorden = She sees the mess (present)

¡Ve el desorden! = See the mess! (imperative for tú)

The two forms coincide, so it is regular.

I hope this helped.

Have a look at this other lesson for more clarification.

Forming the imperative of tú for most verbs (affirmative commands)

Saludos

Inma