Sample waveform not updating

Hi there -

Not sure if sample graphics have been discussed in other threads, but.

When I load a sample from the +Drive to a sample slot, the sample waveform either doesn’t populate or it only partially populates .

Is this a bug or is there some graphics setting that needs to be updated?

Ableton 9.2 on a 2011 Imac using OB v. 1

Curious…