Looks like VA-API is broken on AMDGPU, it seems to actually be crashing the decoder process. See https://retrace.fedoraproject.org/faf/reports/370793/ and possibly https://bugzilla.mozilla.org/show_bug.cgi?id=1751363 (though in that case it seems to fall back to software decoding and not crash). This will likely cause some complaints for people where this was previously working.
Audio broken on Lenovo M720s with Coffee Lake CPU, see https://bugzilla.redhat.com/show_bug.cgi?id=1787387
Seeing a warning in ftrace_init_tracefs_toplevel on boot: https://bugzilla.redhat.com/show_bug.cgi?id=1785957
Causing dependency problems:
Problem: problem with installed package compiler-rt-4.0.1-1.fc26.i686 - compiler-rt-4.0.1-1.fc26.i686 has inferior architecture - cannot install both compiler-rt-4.0.1-2.fc26.x86_64 and compiler-rt-4.0.1-1.fc26.x86_64 - cannot install both compiler-rt-4.0.1-1.fc26.x86_64 and compiler-rt-4.0.1-2.fc26.x86_64 - cannot install the best update candidate for package compiler-rt-4.0.1-1.fc26.x86_64
Warning on boot:
[ 0.000000] ******** [ 0.000000] NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE [ 0.000000] [ 0.000000] trace_printk() being used. Allocating extra memory. [ 0.000000] [ 0.000000] This means that this is a DEBUG kernel and it is [ 0.000000] unsafe for production use. [ 0.000000] [ 0.000000] If you see this message and you are not debugging [ 0.000000] the kernel, report this immediately to your vendor! [ 0.000000] [ 0.000000] NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE [ 0.000000] ********
Launches properly from shell icon under Wayland now (after logout/login, I guess GNOME Shell doesn't detect changes to the existing app icon file without a logout).