Google Docs macro is not being displayed with correct width.

Summary 

Google Docs macro is not being displayed with correct width.

Steps to Reproduce

1. Insert a 'Google Docs' macro on any Confluence page.
2. Configure the width and height of the macro as you wish.

Expected Results

The macro should be rendered with the width and height specified.

Actual Results

The macro render for a few seconds in the specified width/height, then goes to a fixed width. The height is set correctly. As reference, see the screenshot below:

Notes

Issue is reproducible on Chrome, Firefox and Safari, IE and Edge.

Workaround

None.