UX: It's hard to read the column name when cropped

I noticed that the column name, when they are cropped, are hard to be identified unless we expand the width.

However, sometimes it does not make sense to expand the column width, as the values are just simple values (numbers, boolean checkboxes).

I am not sure how to solve this. Here are some options I have in mind:

• add a tooltip in the column name so we can have the full name on demand (probably not mobile-friendly);
• allow the user to expand the height of the header, so the column name is rendered on several lines;

What do you think?