Quantize suddenly does not work

Hello all:

Suddenly this code as action:

self.song().view.highlighted_clip_slot.clip.quantize(Live.Song.RecordingQuantization.rec_q_sixtenth, 1.0)

Does not seem to work anymore how is that possible? I am on 12.4.6 MacOS

Does somebody can help me what is wrong with the line? On 12.3.7 it worked, but I am now on 12.4.6. Could it be that some changes were made in Ableton?

I want quantise to work with selected clip and a 1/16 fixed amount.

Thanks for the help!