This bug is very similar to the one that I posted about the vertical scroll bar bug.
Here are the steps to reproduce it:
- Extract the ddl of a package (as long as its code is long enough to extend beyond the bottom of the code editor)
- Collapse the Package Spec and the Package Body
- Put your cursor in between the package name the ellipsis “…”
- Press the enter key.
This expands the collapsed region but the vertical scroll bar Maximum value does not increase thus not enabling us scroll down to view the rest of the code.