I've been working on a project since 6-8 months, did lots of versions, saved multiple times. I've had only 1-2 crashes that I reported and got fixed.
In my opinion, if you encounter bug or crash often; it usually is in your project or in the order you are doing something which other devs mostly never do in C3... so try a screen recording.
If it is rare, then trust me... take some minutes or even hours to repeat and try to find the issue yourself...
For your issue you mentioned, do a test using a duplicate project
- Test by only cloning objects then save. Check if it gets corrupted
- Test by only removing animations etc.
- Test using cloning and deleting animation together
- Test using cloning/deleting animation on different objects
- Test on another project