Will recruiters be concerned if I apply for their job right after starting a position at a new company?

Hi! I'm about to start a new, very nice job, but that's not my dreamt one. My previous position was great, but had to move out because of a toxic management. I spent there 6 years.

I have just found a job offer that really sounds like my dreamt one and very likely offers better financial conditions.

However, I don't know if I wont be considered as a red flag for recruiters, as someone who is willing to abandon the company, right after a fresh start, if only the grass is offered greener somewhere else.

I would love to work here for at least few months, but I am aware that the time flies and opportunities may not come in the future.

What do you think?