Recently I noticed when updating that pacman doesn't resume where I stopped it (a few minutes before) which is not nice since my internet is slow. After a lot of searching I found out every time I run pacman -Syu it makes a new folder in /var/cache/pacman/pkg named download-xxxxxx where the x's are randomized characters then it puts the downloaded .tar.zst files into that new folder ignoring the previous folder it created last time. My workaround was to move the contents of the previous download folder to it's parent directory but what would be a permanent solution? I remember when this wasn't the case so it must be a new "feature" I can hopefully disable.