-t opens two tabs when no windows are open

[GammaGames]

Using the command io.elementary.terminal -t opens two tabs if non are currently open.

To Reproduce

1. Add custom keyboard shortcut for io.elementary.terminal -t in the settings app
2. Close all terminal windows
3. Press shortcut
4. Notice there are two tabs

Expected behavior

If there is currently no open terminal, it should just create the single window with the single tab

Screenshots or screen recordings

Platform Information

x I'm using the latest released stable version

[GammaGames]

Maybe related to #356 too, but different in that right clicking a folder and opening it in terminal opens one tab in your home directory and the second tab in the target directory.

[t0suj4]

The same problem appears when open with --new-window and --execute=<command>

[jeremypw]

On elementary 6.0 I am getting two extra tabs :disappointed: when io.elementary.terminal -t is launched with a custom shortcut. But only one extra tab when launched from the commandline (of a different app).

[jeremypw]

This may be the result of a recent commit #478

[jeremypw]

Weirdly, launching e.g. io.elementary.terminal -w ~/Documents with a custom shortcut also opens three tabs - all at ~ not ~/Documents. Launching the same command from e.g. xterm opens a single tab at ~/Documents as expected.

So there seems something amiss with the way custom shortcuts work with Terminal.