Antialiasing broken in my project ?


i am working on a little project, and suddenly the AA seems to be broken some how. It just doesnt work no more. The quality stettings have no effect, no matter if the AA settings for AA are low or epic.
The settings in the project settings are Mobile MSAA 8xMSAA and Antiaaliased Method is TemporalAA.

I tried another project and everything there is fine and works, but not in the current project.

What could it be ?

Thanks in advance