supersonic window keeps jumping to the middle of the screen

[llfw]

i'm using supersonic 0.10.1 on Wayland, with Sway 1.9 compositor, on FreeBSD 15.0/amd64. supersonic is in a floating (not tiled) window.

seemingly randomly (sometimes after i click something, but not always) the window will jump to the centre of the screen for no apparent reason. no other application does this, only supersonic.

i appreciate this is a bit of a vague bug report but i'm not really sure how to investigate it -- i'm happy to try any troubleshooting steps.