Why am I experiencing very long key release delay for shift and ctrl with Keychron Q6 Ultra 8k red switches?

I just bought a Keychron Q6 Ultra 8K with red switches. It is my first mechanical keyboard, I've used either a laptop or the cheaper kind (I think those are rubberdome) of keyboards. I immediately noticed that the keys, especially Shift and Ctrl release quite late. I've noticed this because after releasing Shift key, the next letter often comes out as Caps Lock as well. Also, after Ctrl + C or similar, the next typed letter often also still registers as being combined with Ctrl . I've never had this phenomenon before. I can easily reproduce the symptoms when, using two fingers, pressing Shift

Question by tkausl on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.