Welcome to Manjaro!
Nope, haven’t noticed anything.
However, does this also happen if you create a new user and log in there???
For the future, please read this:
and post some more information so we can see what’s really going on.
An inxi --admin --verbosity=7 --filter --no-host
would be the minimum required information… (Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)