This is a problem that has persisted. It was there in Scaler 2.2 and it’s still here in 2.4. I’m on Windows 10 64 bit.
To reproduce this, load up scaler 2, select a hexatonic blues scale then click the mod (5) view. It sometimes crashes right away. If not, click on various scales in the inner part of the wheel. It is set to secondary scale, triads if that matters. It will crash and take down the DAW. This happens in FL Studio and also in Ableton Live.