Hello there,
I created a Dashboard in Explore, and I cannot change the size of the widget.
https://www.loom.com/share/a167b46380ab4acbb3be12de200e37c8?sharedAppSource=personal_library
I tried to clone it and create a new one to do it again and still wasn't able to make it right.
Thanks for asking that.
Can you please try to click on Snap to the grid under the Dashboard configuration tab?
If that doesn't fix the issue, let me know and we will create a ticket for you.