Problem with woocommerce my account page

An odd one this, I’ve got a left hand widget menu setup and it works perfectly with every woocommerce page except the my account page, where the menu ends up below the content on the right of the page.

I’ve tested woo on other themes and it seems to work fine with them

Page is https://www.blackravenarmoury.co.uk/ select My Account from the header menu to see the issue.

No Woocommerce pages have been modified in any way