https://bugs.freedesktop.org/show_bug.cgi?id=106175
--- Comment #96 from tempel.julian@gmail.com --- Yep, that's my observation as well (no compositor vsync enbled at the same time).
I also noticed that sometimes switching between Vulkan fullscreen windows (radv) and desktop can break TearFree, it needs to be reactivated then. I however would like to find a 100% reproducible way to reproduce first before reporting.