It’s not just event_inherited - all functions/scripts are now being called with an incorrect self value.
In time, I will figure out what is it that’s broken this time around (GMLive’s a big extension, that’s not fast) and file a bug report, or someone else might.
Either way, I recommend sticking to 2023.8 or 2023.11 runtimes until 2024.2 gets fixed up a bit.