The first link, the only one for kebab starts with
I updated my OnePlus 8T to Android 13 (the latest update), and installed e-1.8.1-s-20230203257074-dev-kebab.zip
So the focus of the thread was in the Android version mismatch – that is /e/ must be installed on top of the same Android version stock ROM.
Answering your question, if it was a failure of the ROM, this was the version e-1.8.1-s-20230203257074-dev-kebab from Feb 2023 !
Can you rule out the Android version mismatch in your case ?