TogglePaneZoomState causes a bunch of empty lines to appear

[dnguyener]

What Operating System(s) are you seeing this problem on?

Windows

WezTerm version

20220408-101518-b908e2dd

Did you try the latest nightly build to see if the issue is better (or worse!) than your current version?

Yes, and I updated the version box above to show the version of the nightly that I tried

Describe the bug

When utilizing multiple panes, togglePaneZoomState causes a bunch of empty lines to appear above the prompt. This happens when a large amount of text has been generated.

To Reproduce

1. Horizontal Split.
2. On the left window, generate a large amount of output. In my case, I'm using dmesg.
   
3. On the left window, togglePaneZoomState . The pane is maximized but now there are a bunch of empty space above the prompt. The prompt also moved up a line.
   

Configuration

no config.

Expected Behavior

I expect no empty space and the prompt to stay in the same position.

Logs

23:03:40.103 INFO wezterm_client::discovery::windows > published gui path as gui-sock-6252
23:03:40.147 WARN window::os::windows::window > EGL init failed Config says to avoid EGL, fall back to WGL
23:03:40.338 INFO wezterm_gui::termwindow > OpenGL initialized! Intel(R) UHD Graphics 4.5.0 - Build 30.0.100.9955 is_context_loss_possible=true wezterm version: 20220408-101518-b908e2dd
23:24:00.603 INFO wezterm_gui::termwindow > Ding! (this is the bell) in pane 4

Anything else?

No response

[wez]

This isn't really related to pane zooming so much as it is to the general category of ConPTY resizing behavior being weird.
#1265 (comment) has more background on this. I'm going to close this issue in favor of that one.

[github-actions]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.