Mutter only rewrites a buffer's SPA_META_Cursor region when the cursor changed; recycled buffers between damage frames carry a stale id-0 meta. Treating id 0 as a hidden pointer flickered the client cursor off between hovers on-glass — per the SPA contract id 0 is 'invalid/no cursor info', so keep the last-known state (OBS's consumer does the same). A genuinely hidden pointer stops producing updates; the M3 relative-mode hint keeps its Windows CURSOR_SUPPRESSED source. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>