Here's a fix for the cluster grenade. Now if friendly fire is disabled it does not cause damage to players.
https://github.com/tx00100xt/SE1-TSE-Sequel/commit/3a3e4dd5699cc27618df23f39abb2...
I can't say about the second question. I don’t have the next encounter and revolution either. Therefore, I have not seen these effects. It’s better to ask Dream Cecil.
And wish you a happy New Year.