I'm using Manjaro 18.04 on a Thinkpad T480s (with an i5-8250U) and the 4.19.36-1 kernel.
pacman -Syuthis morning (and updating quite a few packages) my machine does not charge anymore. Visual signs are: little LED next to the USB-C charging slot is not lit, XFCE desktop notifications are 'flickering' between 'Your battery is charging' and 'Your battery is discharging' and so is the little battery symbol in the taskbar.
I am running a dual boot with Windows 10 and there the same problem persists. The laptop also does not charge when turned off.
Here are the relevant entries from pacman.log
Maybe somebody can guess what's going on