Why are extra zeros appearing in sale prices on my Symmetry theme collection page?

[MitraTheLabel]

(see attached photo) 

I'm using the Symmetry theme and for all my products that are on sale, the prices seem to display extra 0000's, however, when you click on the product the correct item is displayed. 

However, customers, probably won't click on the product after seeing this huge price. 

Does anyone know how to fix this? 

I've tried installing the theme again from fresh, however the same issue appears on the sale items. 

[MitraTheLabel]

On further inspection, it seems to be adding the price and comparing price figures together to create a new number on the sale collection page 

So if the sale price is £36 and the original price is £40, it makes the price on display £360,040.00 rather than £36. 

It only seems to be an issue for collection pages, rather than product pages. I can click on the product and it will display the right sale price of £36, however, I'm not sure a customer will want to explore a product at this increased price.