https://ssfeatures.com/solutions/smartsheet-extensions-for-unhiding-columns
Smartsheet Extensions for Unhiding Columns — Restore Fast
Smartsheet extensions for unhiding columns: quick popup to find, restore, and save layouts—reduce clicks and recover views. Install SSFeatures now.
smartsheetextensionsunhidingcolumnsrestore
https://bugzilla.mozilla.org/show_bug.cgi?id=127355
127355 - TR tag not redrawn correctly when unhiding using DHTML
RESOLVED (karnaze) in Core - Layout: Tables. Last updated 2002-06-17.
tagredrawncorrectlyunhidingusing