Macbook Pro, 10.15.5 Catalina.
After Sleep my keyboard stays dark, and won't react. Same with Trackpad. Sometimes it catches up, but lately I have a window popping up saying "lost Bluetooth connection to keyboard" and the built in keyboard and trackpad stay nonresponsive.
I noticed the issue the first time last week, when my bluetooth keyboard won't react instantly after sleep. But when turning it on or off it will reconnect and all is normal again. I haven't paid attention to the built in keyboard then, if it lit up or not...
Now that my bluetooth keyboard is at work, this issue is sticky. And it happens multiple times a day.
It is a heavy issue as I cannot reboot my Work until hardreset. The macbook is brand new. This is very upsetting.
The only thing I changed lately was installing Affinity Design Studio (running in background) and have VLC player open. Maybe some compability issues? I haven't noticed this issue before those installs.... Might be worth investigating.