Wikimedia Bugzilla is closed!

Created attachment 15161 [details]
Template parameter input with one line of text

If I am entering text for a template parameter and then I press enter to start a new line, the input box remains the same (small) vertical size and the first line of text disappears. A very small scroll handle appears at the right, but it is not obvious that this is what it is.

Press enter again to add a third line will enlarge the input box so that both the second and third lines are visible, and the dark grey scroll handle disappears (but the light grey slot for it remains. Once it gets to four lines it starts working as expected.

This input box should expand enough with the first few lines, at least, that no scrolling is even necessary. By the time it becomes necessary, it should already be large enough that the scroll handle will be recognizable to users.