Each time I open and close new tab in Terminal app, the size of window "shrinks" by one line, until it reaches 5 lines, where it stops shrinking at last.

I can literally keep repeating sequence +T and +W to reproduce this any time.

I have tried changing Terminal settings, font family and font size, but nothing helped. Is there anything that can be done to prevent this?

Note: this question is not a duplicate of Opening tab in Terminal resizes window.

  • Have you tried submitting a feedback to Apple?
    – Felicio
    Commented May 17, 2018 at 8:03
  • 1
    Technically, it is related. It is just not a duplicate.
    – Felicio
    Commented May 17, 2018 at 20:36

3 Answers 3


The solution is to turn on setting to always show tab bar, even if only one tab is open in window:

  • in top bar, go to ViewShow Tab Bar,
  • or use keyboard shortcut ++T.

This is just a workaround I have found on this site to a bug that is present in Terminal app at least since 2009. So far this is the only solution that was working for me consistently on every OS X installation.

  • 1
    As of macOS High Sierra (10.13.4), this still remains an issue. Even with this solution applied, Terminal window will shrink at least a little bit when fully stretched vertically (hidden Dock).
    – Felicio
    Commented May 17, 2018 at 19:43
  • Unfortunately, for splitting pane this solution falls short too.
    – Felicio
    Commented May 17, 2018 at 20:33
  • I don't have this option on Windows.
    – aderchox
    Commented Nov 19, 2022 at 7:46
  • 1
    @aderchox what do you mean "on Windows"? This is a macOS-related question and you are on a site dedicated to Apple-related problems 😃
    – FurloSK
    Commented Nov 21, 2022 at 12:33
  • @FurloSK Oh thank you, I was searching for just the exact same thing for VSCode.
    – aderchox
    Commented Nov 22, 2022 at 6:37
  1. Window > Save Windows as Group...
  2. Preferences > General > On startup, open : Window group, select the item that you just saved.

after these actions, the Terminal could keep window size, but if you open a new terminal window, you will get a default window size of it, finish follow steps to work out it:

  1. Preferences > General > New windows open with: Same profile
  2. Preferences > General > New tabs open with: Same profile


it works on macos 12.5

enter image description here


I'm using the version 3.4.16 and I found the following option to always show the tab bar:

Iterm preferences

This solves the problem described in the question.

  • 1
    Does this solve the problem described in the question?
    – nohillside
    Commented Aug 23, 2022 at 9:56
  • Yes, it does, because the terminal window, by default, changes its size when you have goes from 1 to 2 tabs because it starts to shows this "tab bar". With this option checked, it will always show the tab bar and the size will not change anymore. Commented Aug 24, 2022 at 11:42
  • Maybe you should add that to the answer. Currently it reads like the answer to a "how can I force the tab bar to show always" question.
    – nohillside
    Commented Aug 24, 2022 at 12:07
  • What version of macOS is this? It would help more than stating version of Terminal app. As far as I understand, your answer is the same as mine, just the place where the setting (to always show tab bar) is located has changed. I can add this to my answer if you give me the macOS version.
    – FurloSK
    Commented Sep 3, 2022 at 15:39
  • I'm running 12.5.1 Commented Sep 4, 2022 at 18:34

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .