3.5.0beta13, muted colors, new shell windows blank, profile menu option causes crash

Bug report

Thanks for filing an issue! Please answer the questions below so I can help you.

iTerm2 version: Build 3.5.0beta13
OS version: macOS Sonoma Public Beta RC 2 14.0 (23A344)com.googlecode.iterm2.plist
Attach ~/Library/Preferences/com.googlecode.iterm2.plist here (drag-drop from finder into this window)
Attach a debug log, if possible.
Attach a screen capture video if it would make the reproduction steps clearer.

PLEASE ATTACH YOUR PLIST FILE FOR BUG REPORTS! Seriously! I'll probably ask you for it if you don’t.

Detailed steps to reproduce the problem

Upgrade to Build 3.5.0beta13
Open iTerm2
See it crash
Open it again
See it open fine for some reason
View the extremely dim colors in the terminal.
Try to change the colors by going to Profiles
See it crash.
Re-open iTerm2
Try to open a new shell window
Shell window is blank for some reason, but the restored session is fine.

(this is supposed to be funny/tongue-in-cheek, BTW, not intended to be a dig at the fine work you have done for the community all these years)

I attempted to create a debuglog but neither the menu item nor setting the "start logging on iTerm startup" option generated one.

Totally get it if you just want to close the issue because you already know iTerm built with Xcode 15 is wonky. Reporting here in case you hadn't seen these.