there seem to be cases where ToDo List gets stack with showing an error that doesn’t apply anymore. See the two images below for example. To fix the issue I just exited back to the dashboard and opened the app again in the editor and all was fine again.
Have seen it happen again. It happens when copying say an Icon together with its workflows from another page as in this case. I then edited the event triggers and the actions, but this action although I selected the correct values interactively via Bubble’s expression editor kept on complaining