Understanding device class duration better

[parautenbach (Pieter Rautenbach)]

@Ildar_Gabdullin

2022.7.7
In my tests this code did not change anything after reloading templates & customizations (did it several times):

Thank you for testing this, Ildar. I’m running 2022.7.6. In my case this wasn’t working as expected before my last upgrade. On other words, there’s also been several restarts since.