The screen shot below says nearly all:
Because of my eye, I need to use darkmode. The ListBox Rows are not visibles ad you can nearly see above.
The rows are visible if they are selected.
This is new, it was like that in 2021r2.1, but Sonoma removed that bug (and add the bug with the current version).
For the record, look the second screen shot, below where I selected a Row far below / look at the vertical scrollbar: there are more Rows than the current window height can display and we see only one (this ListBox only cen select ONE Row at a time).
There are 80 Rows (list of the SQL keywords).