Ticked off tasks don't propagate between devices

Even after vigorous refreshing on my phone, tasks that I have marked as completed on my desktop do not get marked as completed on my phone.

Below shows, the 'up to date' desktop task list, next to the 'out of date' phone task list under a certain category. Some tasks censored.

Running v. 1.0.18 (186) on android 14; and v 3.3.1 on ubuntu 22.