Footer text widget formatting — bug?

I have text inside text widgets in the footer widget areas.

With “Automatically add paragraphs” selected, the text appears small and centred in each footer widget area. This is how I want it to be and note that this is how it is at themesandco.com . Without “Automatically add paragraphs” selected, it appears larger and left-aligned.

[Already this looks like a bit of a bug, as I wouldn’t expect a paragraph setting to alter the rest of the formatting. But it’s no big deal as you simply select “Automatically add paragraphs” to get the nice formatting.]

A bigger problem arises, however, when you need to put more complex html in the footer widget areas. I have address, phone number and opening hours inside the text widgets and want to mark them up with schema.org microdata. For example, something like:

<div itemscope itemtype="https://schema.org/LocalBusiness">
<div itemprop="address" itemscope itemtype="https://schema.org/PostalAddress">
<span itemprop="streetAddress">Our street</span>
<span itemprop="addressLocality">Our city</span>,
<span itemprop="addressCountry">Our country</span>
</div>
Phone: <span itemprop="telephone">Our tel</span>
</div>

However, adding the microdata makes the formatting appear large and left-aligned again, whatever the paragraph setting ??

Is this a customizr problem or a wordpress problem? Does anyone know if there is a quick fix that I could use to get around it?