(Toad for SQL-Server 6.5) After "define filter for data", quickly press Alt+O will be crash!!

At Toad for SQL-Server 6.5,
When I open the “explorer database object”, and choice one table, in the “define filter for data” key in some condition, this time if you quickly press Alt+O,

then will be CRASH!! (more and more popup window …)

Have any people get the same situation ?