In the latest update, there was a fix to better adhere to the users chosen size. This was after many complaints about mis-aligned widgets. Unfortunately, your template items are larger than 1x1 - which is evident when I use your VUE code i get this:

The issue is the content is too big for the fixed size 1x1 space.
You can either modify your template content, increase the size of the widget, or add suitable CSS to disable scrollbars.