I have the beta installed of Xubuntu 18.04 64 bit. When I open up a terminal window I will have a vertical scroll bar from the beginning even if there is nothing to scroll. Just want to let you know.
This sounds like a feature request. All terminal emulators below behave like xfce4-terminal, the scroll bar is always or never shown: gnome-terminal, mate-terminal, terminator and konsole. The only terminal emulators that accomplish what you ask are tilix and pantheon.
Ah okay, I thought this was not the case in previous Xubuntu releases. Then just ignore this bug report or implement it like you wish :)
Just to make it clear, that terminal list is not comprehensive, those are only the ones I know and could install & test. I've checked xfce4-terminal 0.6.3, the scroll bar is always present. No problem, it's up to Igor to implement or dismiss =)
Andre, thanks for stepping in! I was sure I responded to this report yesterday but must not have saved the changes, apparently. Indeed, all or most terminal apps always show the scrollbar. I believe there's simply no way to know whether the terminal widget has enough content that can be scrolled or not.