April 10, patch2

11 Apr 2026Developer post

vrOS v0.5.2 Patch Notes

Major desktop-only memory leak reduction. In local warm profiling, the desktop app's recurring private-byte growth dropped from roughly +8.9 MB to +15.8 MB over 3-minute samples to about -0.5 MB to +1.4 MB over equivalent runs. This leak reduction applies to the desktop app path; smaller residual leaks are still being investigated separately.
Desktop close behavior is more polished. The shutdown dialog now includes the desktop auto-start checkmark and correctly saves that preference when you close the app.
Startup and shutdown are more stable. Bridge teardown and child-process pipe decoding were hardened so transient lifecycle races do not spam new JSCore warnings or unnecessarily destabilize child processes.

Reduced the main desktop idle memory bleed by throttling unnecessary Ultralight, bridge, and shell timer activity while the desktop app is idle.
Fixed the desktop shutdown dialog so the auto-start desktop checkbox persists instead of being lost when closing the app.
Fixed bridge lifecycle handling so missing `window.__vros` during startup or teardown is treated as a normal page state instead of a noisy warning path.
Hardened desktop and VR child pipe decoding so isolated malformed frames are logged with better diagnostics instead of immediately tearing down the child connection.

Desktop shell updates are more activity-driven, with less constant background wake-up work from clocks, VR status refreshes, and auth revalidation.
Pipe framing diagnostics now include payload previews and prefix bytes, making the remaining IPC and shutdown issues much easier to investigate.