Hi
I have two keyboard issues with my Pro 1 (original Android 9, not LineageOS):
There is no keyboard backlight. I read that many users complain about low-intensity light, but there is absolutely none in my case. The only key with (the low-intensity) backlight is CapsLock (when turned on).
Open keyboard is not detected. When writing on the hardware keyboard, a software one keeps showing despite the fact I have "Show virtual keyboard (keep it on screen while physical keyboard is active)" turned off. Applications such as "Null keyboard" are workarounds, but it is very annoying.