Its a known issue that using Proton either Aurora or the game will steal the input focus. The only workaround is to run the game in borderless or window mode.
Just as a reminder we only support Windows and Steamdeck. We cannot help with other kind of linux distributions, there are just too many out there. If Aurora or the SDT doesn't work it can easily be also an issue of your distribution. Like things are missing or changed in a way that makes our apps incompatible.
Thanks! I had found this out a little before your reply but nonetheless extremely helpful information.
The issues I have are definitely because of my flavor of Linux, as an example that was pointed out to me here my steam directory is different than on a normal SD, so SDT won't work regardless. The most common error I get with using aurora normally is always involving WmiNetUtils but ignoring it has had 0 drawbacks so far so honestly I'm willing to consider Aurora itself working as intended. Scaling/window size is sometimes weird but I can just squint 👌😂