I have both version 1.8.12 and 2.0.0 installed on my system (windows 10 version 20H2)
The 1.8.12 version is working perfectly, but the 2.0 beta 5 version
did not seem to find any of my installed libraries with the TimerFive library installed (I used the same sketchbook location)
With the library installed, if you open the library manager, nothing is showing and also under “Sketch” “Include libraries” nothing is showing.
Removing the TimerFive library from the sketchbook/libraries folder, gets everything working again.
How can i diagnose why this library is causing this issue? because it is working in IDE 1.8.12