I'm very happy to have the new fixes in wardrobe! However, with them came an unwanted change for me: I no longer get the button to click to purchase an item. Thank you ^^
I am having the same issue as you. Hopefully someone can fix it :(
Just noticed that also unfortunately. I'm on Win7, latest update for Firefox.
Just letting you know that I'm aware of this. The fix is likely to take a little bit of time, just because of how we're trying to send the items that you own to the wardrobe wasn't working.
💖 ✨ 🤗
Here's my temporary workaround to make it easier and faster to access an item's purchase page. I use a browser extension (such as Context Menu Search) that makes it so whenever you select some words you'll be able to search them by clicking an option in the right-click menu, as below. It will open a new tab and redirect you to the item's Shop Search page.

https://subeta.net/user_shops.php/search/shops/%s
Sorry if my words don't make much sense, I'm a bit tired ain't gonna lie.