Note my problem is almost the opposite of what is described in this thread:
https://forums.lutron.com/showthread...-at-the-switch
I mention that because they may somehow be related.
I have a Caseta Smart Dimmer Switch. As far as I know it is an P-PKG1WB-WH. It's too bad the Lutron app cannot tell you that.
It is controlling some cheap LEDs.
After the install everything was working fine. I setup a program to turn the lights on at about 25% at sunset and it worked for about 3 months.
Then at some point I tested the hardware buttons on the wall switch (it's in an inconvenient location so I did not routinely use it; however I do know it was working fine at the beginning).
Now the hardware buttons on the wall switch are nearly 100% unreliable.
The APP can control the lights "fine". I say "fine" because it is true that using the app I cannot set the switch to 25%. I must set it to 100% and then slide down to 25%. But that "trick" does work.
At some point the performance degraded and the SCHEDULED EVENTS stopped working; the lights do not turn on at sunset. I then modified my original 25% event to go for 100% and then I created another event that fires one minute later to set the dimmer to 25%. This does not work. In the dark it’s possible to see the LEDs are “on” at about 1% but that’s all it can do.
Using the hardware buttons on the switch does not do anything.
The user interface in the app will allow me to turn on the lights at 100%, dial down to 25% and the scheduled event that turns them OFF at night does work.
Some of this behavior may be explained by the cheap LED lamps but not all of it.