Column width not working

I have tried changing the column width in both studio and listviewdefs.php and the column widths are not updating. Is there a fix for this issue?

After making changes, did you try running a “Quick Repair/Rebuild” from the Admin > Repair menu?
Afterwards, clear your browser’s cache and press CTRL+F5 and see if the changes have been made.

I have tried this but had no luck with it. The columns stay the same regardless of what values i enter followed by a quick repair.

This is in the suite R theme.

Any suggestions?