Hello GetMem,
It seams that OPM is now deleting all previous pl_* components directories inside of ct4laz directory when new pl_* component is getting installed. The result is that only last pl_* component stays, which is pretty bad since it confuses IDE and pl_0_libs is always deleted. If I remember well, this problem existed long time ago but was fixed. I can download several pl_* components via OPM and install them manually without problems (if my manual installation order is correct).
Tested with a week old trunk laz and trunk fpc in 32bit laz on Win10x64.