We are on Sybase 12.5
If I change the order of objects in Query panel, the number of rows fetched vary drastically.
The query joins 6 tables (including aliases).
Changing the order of objects changes the join conditions on tables. Some LEFT OUTER joins are converted to RIGHT OUTER joins.
One query fetches 42 rows while other fetches 725 rows and takes ages to run.
If I recall, the placement of the tables in the Designer will also exhibit this same behavior (of joins Changing from Right to Left outer, etc). You may want to check your Universe to see if that has any effect.