Ink rendering issue with terminal buffer off in alternate buffer

[galdawave]

What happened?

What did you expect to happen?

Background to be visible

Client information

Client Information

Run gemini to enter the interactive CLI, then run the /about command.

│ CLI Version                    0.39.0-nightly.20260411.0957f7d3e                          │
│ Git Commit                     7f5d71714                                                  │
│ Model                          gemini-3-flash-preview                                     │
│ Sandbox                        no sandbox                                                 │
│ OS                             darwin                                                     │
│ Auth Method                    gemini-api-key

Login information

No response

Anything else we need to know?

No response

[galdawave]

FYI @jacob314