For example, if I start typing a query like
select s. from user_sequences s
so that Code Assistant pops up a list of columns to expand "s."
I have noticed colleagues painstakingly selecting one item at a time, but when I suggest using control-click to select multiple items, it only lets them pick one.
(This is from my home PL/SQL Dev 14 setup as I can't take screenshots from work, but it works fine for me in both versions.)