Im trying to sort my demos in "demo menu" with:

"Sort the demos by name by pressing [Ctrl]+[N], by time by pressing [Ctrl]+[T] and by size by pressing [Ctrl]+[S]."
from http://ezquake.sourceforge.net/docs/?demo-player

but it doesnt work, am I the only one with that problem?

You're doing it wrong! Or atleast you are not doing it the same way I normally do it... and I would consider that the same

What I do is that I use alt+3 to sort by time... ctrl+number will hide/show that column, while alt+number will sort by that column. If you do it twice it will be reversed.

1 = Name
2 = Size
3 = Date
4 = Time

- Can't remember if there are more than that...