State problem: Activity turned OFF, but remote still shows that it's ON

I have an Activity that uses two Devices.

I turned the Activity OFF using the physical power button on the remote. Both Devices turned OFF, but the Activities page still shows that the Activity is ON.

The Devices page still shows that both Devices are ON.

How can I tell (reset ?) the remote that everything is actually OFF ?

Do you know which power state the devices had on the remote before you turned off the activity? For IR remote entities the remote just assumes the state depending what was the last power command. It’s advised to use discrete power off and one commands in activity sequences.
Have you remapped the physical power button for this activity? Only when there is nothing mapped to this button it will turn off the activity resp. run the off sequence.
If the activity is still on you can also check if you see a white bar at the bottom in the main pages and swipe it up. You can swipe left and right through all running activities and media players. Just tap on an activity and you can choose to power off the activity. Otherwise you can just restart the remote. This will reset all activity states.

I don’t know the state of each device, no. I do use discrete power on and power off commands for all devices. I have not remapped the physical power button. There was no white bar shown at the bottom in the main pages.
Restarting the remote was the only thing that worked. Thank you !

Using discrete power commands is helpful, but even with that, there is not a way to clear state or run a macro to change state and say jump to the main menu. In a two remote room, every activity has on & off sequences to functionally change power, but it becomes artificially misaligned because of the device states, i.e., ignoring what the remote thinks, it is a clunky work around but works. It is just harder than it needs to be.
When integrations are easily integrated into the remote, e…g., harmony hub, then I think it will be easier to program with less external dependencies.