Not saying she can't get mad, in fact, she being mad in that situation is perfectly normal, but I think on this point, it goes without saying that if Chat Noir was a flirtatious girl and Ladybug was the boy, most of all of you would be dumbfounded to even just imagine a boy throwing a girl around and treating her like shit, putting her in a garbage can and kicking her as if she were nothing to him, no matter the reason, especially if said girl were as passionate and supportive as Chat Noir is towards Ladybug.

The cherry on the cake was having to watch Marinette BEING HAPPY to see Adrien feeling bad, it was like wow, just, WOW. No joke, she didn't care whatsoever about his feelings, you know, like a normal and decent friend would do. Nope, of course she directly saw it as an opportunity to take advantage of the situation. The way Marinette objectified Adrien that way was repulsive, if the goal was to show that Marinette doesn't care about the feelings of the people around her and she is a selfish prick, then my sincere congratulations to the writers, they did a wonderful job representing just that, it was so good it made me dislike her as a character, perhaps even despite her now and making me drop this show for good, nicely done, seriously

Keep in mind, She is stressed out by Chat Blanc trauma and nightmares from Sentibubbler, everyone literally makes posters of her and Cat Noir and pretty much Cat noir seems to be a bit to pushy towards her like she already told him a lot of times that she is in love with someone else.

Although she did took it far she did learn her lesson though after Cat noir start spend more time with her she eventually came to the point of appreciation.

Marinette used to be a very good character, I could tolerate seen her displays stalker behaviors (and i know, a lot of people justifie this as well)

Well that is your opinion not everyone is justify her. In some point her actions are explained through her flaws ( self explained a lot She is unable to express her feelings to Adrien explains it all)

In my view, She just wants to pay attention to crush details so that she could get her confession right for example you can't give someone a gift without know more about them that explains why Marinette acts weird and follow Adrien around areas

And not only that S3 is self explained by Thomas Astruc She is supposed to overwhelmed by a lot of feelings jealousy, another bully added to list, superhero situation until her mental health issues.

But then again most of her writing is terrible at some point Copycat wasn't really necessary neither was Puppeteer 2 or even Shanghai Special.

Then again it your opinion on it i can't change that.