Vertical lines appearing, Dimmed window

Bug report

• iTerm2 version: Build 3.5.0beta13
• OS version: 14.0 (23A344)
• Attach ~/Library/Preferences/com.googlecode.iterm2.plist here (drag-drop from finder into this window) com.googlecode.iterm2.plist
• Attach a debug log, if possible. debuglog.txt

Detailed steps to reproduce the problem

1. Install Sonoma
2. Open iTerm

What happened

The window is dimmed much darker, and there are vertical lines running through it regardless of size, or profile.

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