Question Keeping References to Entities in 0.51

Is it safe to keep a reference to an Entity in Managed Code in 0.51?

I am running into the scenario where it looks like my references are changing under the hood:

• Some change to different entities
• Some look like they are reused
• Some seem to become Entity.Null

I would like to make sure while fixing this, that keeping the reference in general is safe.

Does the answer change if I am accessing entities on threads other than the main thread?

I assumed Entities are safe to be referenced based on this documentation section:

 

Depends on how you are getting and saving that reference. There are a lot of pitfalls, especially in conversion stage or with command buffers. Entity references are handled pretty well in ECS world because of patching but stored in MBs that patching isn't there.

Usually it's safe to keep references.

 

Thanks.