open -na Ghostty duplicates all tabs instead of opening one empty tab

[Elijas]

Current behavior: When running open -na Ghostty on macOS, it opens a new window that contains ALL tabs from my previous session (essentially duplicating the entire tab state).

Expected behavior: It should open a new window with just ONE empty tab, not restore all previous tabs.

Steps to reproduce:

1. Open Ghostty and create 2-3 tabs
2. Run open -na Ghostty from terminal or via keyboard shortcut
3. Observe that the new Ghostty instance contains all tabs from step 1

Context:
Even if creating a new instance is the intended behavior of -n, the new instance shouldn't duplicate the full tab state. For comparison, when using Cmd+N within Ghostty, it correctly opens just one new tab in a new window. The open -na command should behave similarly.

Use case:
I'm using this to spawn isolated AI agent sessions (Claude Code) that need to run independently:

open -na ghostty --args \
  --working-directory=/some/path \
  --quit-after-last-window-closed=true \
  --title="Debug Session" \
  -e sh -c \
  "claude 'please fix the bug'; exec \$SHELL"

Environment:

• Ghostty version: 1.2.3
• macOS version: macOS 26.0.1 (Build 25A362)

Question:
Is this the intended behavior, or should this be filed as a bug? I've checked #2353, #3563, #7867, #8193, #3563, and #3445 - none cover this specific tab duplication issue.