Bricks Builder Fonts have increased

All the of the font in the builder has increased and I cant seem to find out how to reduce it back to normal.

For example all the structure text for the words section, column is bigger and when adding text to a basic text field the text is enlarged too.

Any ideas how to reset that or why its changed?

Version: 1.10.3

It looks as though a global font css rule has affected the builder too.