In Densmore v. State, No. 05-91-00937-CR, 1992 WL 86653 (Tex. App.--Dallas Apr. 22, 1992, no pet.) concerning criminal failure to pay child support, the State called defense counsel to show that the defendant had the funds to pay child support. Id. The court of appeals held that the trial court erred by not declaring a mistrial because defense counsel's testimony centered on the essential element of the offense charged, and the process cast doubt and distrust on defense counsel's credibility.