Table widget width greater than screen width bug

Tested in both Chrome and Edge the table width is greater than the viewing area when viewed on a large screen when the default should be 1200px wide.

I have 6 cells and when I convert to 3 cells the problem still persists.

The problem disappears when I:

• republish the page
• inject css into the table with table-layout
• turning off injected css table-layout the problem remains disappeared

The problem persists when I:

• refresh the page
• inject css explicit width for the table ie. width:1200px!important - width is still greater than 1200px at 1345px wide. Affected too is the padding of the cells which changes between the two states.