GTK is now using Vulkan to render things now. What hardware and distro are you running? I would recommend making a report on GTK since your potentially outlier case may affect others.
I’ve been running the beta and have no issues with 1:1 chats. But the group chat (3 people) I tried didn’t switch to RCS until the other iPhone user sent a message.
Not aware of any correct pictures, but I can tell you what's wrong with this one
/usr: explaining it as "Unix System Resources" is a bit vague
/bin: /bin is usually a symlink to /usr/bin
/sbin: /sbin is usually a symlink to /usr/sbin, distros like Fedora are also looking into merging sbin into bin
/opt: many, I'd say most, "add-on applications" put themselves in bin
/media: /media is usually a symlink to /run/media, also weird to mention CD-ROMs when flash drives and other forms of storage get mounted here by default
/mnt: i would disagree about the temporary part, as I mentioned before, stuff like flash drives are usually mounted in /run/media by default
/root: the root user is usually not enabled on home systems
/lib: /lib is usually a symlink to /usr/lib
I would also like the mention that the FHS standard wasn't designed to be elegant, well thought out system. It mainly documents how the filesystem has been traditionally laid out. I forget which folder(s), but once a new folder has been made just because the main hard drive in a developer's system filled up so they created a new folder named something different on a secondary hard drive.
There's nothing technical stopping Google from sending the prompt text (and maybe generated results) back to their servers. Only political/social backlash for worsened privacy.
I experienced that failed run shutdown binary a lot, the issue was that the OS I installed the drive on was defective. In use, the entire filesystem would become read only, the OS would freak out, and shutting down would fail with that message.
Are the default policies good though? There's some collaboration between Fedora and Tumbleweed for SELinux policies, I imagine even more now since Tumbleweed plans to move to SELinux in the near future and derivatives like Aeon are already using SELinux.
It also has Cosmic. No Gnome session, but Gnome apps.