Wallboards displayed incorrectly (size scaled down)

Summary

Wallboards are not displaying content with the correct format.
The columns don't have the right width. Wallboards are leaving some big black spaces and it's compressing the content inside the column.
If you set your Dashboard to have only one column, the Wallboard will display a column with 300p width.

Environment

Jira Software Cloud

Steps to Reproduce

1. Create a dashboard
2. Add some gadgets on it and change the layout for one, two or three columns

Expected Results

The Gadget should display correctly on half of the screen or on the full screen

Actual Results

This gadget gets narrowed down to a size that makes it unusable

Workaround

No workaround available