Based on your follow up post #9, it seems like the property was initially the separate property of the spouse whose inherited funds were used to acquire the property. However, in your original post, you mentioned a transfer of title from the trust to both spouses. You also mentioned using community property funds to pay the mortgage. Absent the existence of a relevant prenup or post-nup, the marital community likely has at least an interest in the property. If the wife wants to claim that some or all of the property is her separate property, she'll have the burden of proving that with clear evidence that the property is not community property.
When it was transferred to "John Smith and Jane Smith," how did John and Jane hold the joint title? "As community property"? "As joint tenants"? Something else? At the time title was transferred back to the trust, was there any documentation signed that indicated an intent by the marital community to relinquish its interest and transmute the property to the wife's separate property?
What you attached is an assignment of assets, not a trust, and it doesn't really help the analysis, except that it seems to indicate that, as of nine years ago, there was only a single trustee.
"Issue," in the context of the question that you were asked, means children/grandchildren, etc. It's not relevant to the question you asked. However, it's interesting that you didn't mention in your original post that there is/was a divorce. Do you have an attorney representing you?