Tex. R. Civ. P. 220
As amended through February 20, 2024
When any party has paid the fee for a jury trial, he shall not be permitted to withdraw the cause from the jury docket over the objection of the parties adversely interested. If so permitted, the court in its discretion may by an order permit him to withdraw also his jury fee deposit. Failure of a party to appear for trial shall be deemed a waiver by him of the right to trial by jury.
Tex. R. Civ. P. 220