I think the v2.4 update made this worse. Or, it's at least still not working and just doing something strange.
I can appreciate the addition of the "Cancel" button on control screen modification. That helps. However, if I modify the screen with my lights--where the dimmers have the same old configuration with small indicators that don't show up as green when on--and then click "Cancel," all of the dimmers temporarily show up with grey small indicators (Grey Indicators.png). Then the grey indicators go away after a while, and the green "on" indicators still don't work.
I haven't modified any of my controls (Control Properties.png). If there's a way to make my dimmers look like my switches, I'm all ears.