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 related to Opening tab in Terminal resizes window.

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

1 Answer 1


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
    May 17, 2018 at 19:43
  • Unfortunately, for splitting pane this solution falls short too.
    – Felicio
    May 17, 2018 at 20:33

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