[ISSUE] Output clipping despite Ozone limiter

I don’t know if this is user error or a bug but it was notised last night when I was about to quit the session.
Have not seen this before in C7,5 anyway…
I had Ozone limiter on the last insert of the master fader and set to -0,3 dB margin.
Still the output signal clipped at 0,2 dB.
A 10 minute search did not find a solution, other than reducing safety margin to -0,6dB…
Anyone else seen anything similar?

Will look into this later…
It was an old 7,5 project imported to 8…