This rebuild table bug was caused by a change to fix a bug in Generate Schema Script.
Both windows use some common code to get DDL from the database. The problem was when I made the trigger filtering change (to load triggers specified by trigger names), it broke rebuild table (where we load triggers specified by table name). There is some code in there to decide which way to filter triggers, but I made a mistake that caused rebuild table to look for triggers by trigger name.
Both scenarios will be retested for the fix.
We have been adding and will continue to add automated testing internally, so the "one bug caused by a fix to another" problem should be decreasing.
Also, I'd like to add that lately, most changes are bug fixes, not new features. We are working to make Toad as stable as possible, but of course, no software is perfect.
I'm sorry this caused you a problem in production.