This summary is not the rule. The rule text controls.
When it comes to moving a criminal trial to a different location (called a change of venue), the rules are different for the state and the defendant. If a judge agrees to move the trial even though the state didn't want that, the state has the right to appeal that decision. The state also has the right to appeal if the judge refuses to move the trial when the state was the one asking for the move. Either way, the state must file this appeal quickly, within the normal time limits for asking for an appeal, and it has to happen before the trial actually starts.
The defendant is treated differently. If the judge makes a decision about moving the trial (whether granting or denying the request), the defendant cannot appeal that decision right away. The defendant has to wait until after they are sentenced before they can raise any objection to the venue ruling. This means the defendant can't stop the case early just to argue about where the trial is happening. Instead, they have to go through the trial first and can only bring up the venue issue later, as part of a broader appeal after sentencing.