My example is Ahsoka leaving the Jedi at the end Of Season 5(The Wrong Jedi)
They gave her the full Alfred Dreyfus Treatment( Cashiering and all) after she was falsely accused of bombing a temple without even giving her a fair chance at a trail(which Anakin even call it out). Even running the risk of being put to death if the heroes hadn’t manage to clear Ahsoka’s name in the nick of time. So what does the Jedi Council to her after calling for her head on false charges?
They basically said her hardships though everything that transpired during the fugitive arc proved her worthless as a Jedi Knight. Without even admitting fault or apologizing to Ahsoka at all.
At This point, Ahsoka has lost fall faith in the Jedi Council and decides to leave instead. Anakin tries to get her to stay but she’s made up her mind. And can you blame her? They put her though a kangaroo court and didn’t even say sorry when it was all said and done.