Please read release notes for SQLyog version 8.13 (http://webyog.com/fa…on-history.html)
“When updating from DATA or RESULT grid the UPDATE statement will now only list columns that were changed. That results in more readable statements and may also improve performance with 'wide' tables and tables with large BLOB/TEXT columns.”
Additionally this solves this problem (if I understand what you are telling).
And it does not really makes sense to discuss bugs witn an ~5 year old program version. You should upgrade.