UPDATE: I'm replying here so future folks can track better. We are seeing a 10% or higher failure rate on the LCD screens on the StickC Plus 2 devices. We still have about 20 of the original 100 that we haven't used yet. We'll be calling M5Stack for some RMAs to try to get working devices.

Symptoms include the LCD not refreshing, but writing additional text over existing text, text not updating inside labels at all, the LCD turning from black to completely white without being programmed to do so, and eventually the screen just remained black (and still back lit). Reloading the device does NOT fix this issue.

Also, I'm working with @texasmedic.

We are seeing the same issues with a collection of the StickC Plus2 devices. We purchased 100 of the devices and about 80 of them have been used. Out of the 80 devices we have already used, we have 5 of them that have screens that have failed. We haven't put all the devices through the same rigor, so the failure rate MAY increase. But we can conservatively confirm a 6-7% failure rate on the LCDs at this time.