I'm on Windows 10. For years, it has been my habit to turn off Tixati and wait for some moment before putting my PC to sleep, because the PC would wake up right after going into the sleep mode without Tixati properly terminated. The process of having to terminate the app at the end of day and re-launching it the next day, so to speak, has become a routine; but it was a nuisance. I could somehow automate them with some batch commands and Task Scheduler, but...

I only realized just now that I could just disallow the network device to wake the computer to stop the nuisance.

Device Manager - Network Adapters - Your controller
Properties (from context menu) - Power Management - Allow this device to wake the computer

Unchecking the  thing solved the problem.

I really wish it had been easier to find this solution.