My Dawn Theme Multicolumn has changed to a 'list' rather than vertical columns!

[jonbonse]

I installed an app that hides the prices of products unless customers have an account and now when i try to edit the collections or multicolumn's in theme editor, they are seen as a list rather than a column!

The front end looks absolutely fine and how I want it to look but I am worried if I need to modify the columns, I cant see what it looks like properly until I look at the front end.

I dare not to delete the theme however have duplicated the theme and tried the copied theme but they are still showing as a list in editor!

Here is the site: www.acpsupplies.co.uk

Can anyone help?

[jonbonse]

Here are some screen shots:

[EmalineAudra]

I am having the same issue! However, I did not download any apps that should be conflicting.