Split Pane and Agent Mode use wrong shell

[asuras-coding]

Dupe Check

• I have searched Warp bugs and there are no duplicates

Describe the bug

Initially I tried using agent mode in the windows build (also affects the unix build). However I use wsl/ubuntu but starting agent mode always used a powershell. I did some further testing and found out that the 'Split pane' and ' Agent Mode' features create a split pane and always use the default shell.
So if I have zsh as default and open a new tab with bash for example, I can use Split Pane and get a bash on the left and a zsh on the right.

To reproduce

1. Open a new tab with the non-default shell-type (e.g. if zsh is default, open a bash-tab)
2. Use Split Pane (Ctrl+Shift+D) to create 2nd pane (or start agent mode)
3. The new pane uses the default shell (e.g. zsh)

Expected behavior

I would expect if I split the pane (or use agent mode) the new pane would use the same type of shell.

Screenshots

No response

Operating system

Linux

Operating system and version

Ubuntu 24.04.1 LTS (WSL)

Shell Version

No response

Current Warp version

v0.2025.01.29.08.02.stable_00

Regression

No, this bug or issue has existed throughout my experience using Warp

Recent working Warp date

No response

Additional context

No response

Does this block you from using Warp daily?

No

Is this an issue only in Warp?

Yes, I confirmed that this only happens in Warp, not other terminals.

Warp Internal (ignore): linear-label:b9d78064-c89e-4973-b153-5178a31ee54e

None

[nichoj10]

Would it help to set your "Startup shell for new sessions" under Features > Session?

[asuras-coding]

Thats some kind of workaround, so i could actually open agent mode with zsh on windows. However it does not fix the general behaviour - still thanks :)