There is issues with the latest update mostly involving gpgme. Some of your issues will probably be solved with the volume_key package provided here. Maybe some other of your issues may be covered in this Unstable Update Thread also. There may be a couple of other packages users have provided also.
We are still waiting for arch-arm to bring some things up to speed in that thread.
Some one built Chromium a couple of times in this thread.
https://forum.manjaro.org/t/chromium-does-not-run-after-latest-unstable-update/175004
And here also.