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Event stream (SSE) doesn't resume after tab is backgrounded and restored — requires manual page refresh #47258
Description
Description
In packages/app/src/context/server-sdk.tsx, pagehide always calls stop() on the event stream (lines ~325-328), but pageshow only calls start() again if event.persisted === true (resumeStreamAfterPageShow, lines 162-165).
Since the event stream itself is an open streaming fetch() connection, it is a known bfcache blocker in most browsers — meaning the page is often not bfcache-eligible, so persisted comes back false on pageshow, and start() is never called.
Result: After backgrounding/returning to the tab (switching apps, locking screen, etc.), the live event stream stays dead and the UI stops reflecting session updates until a full manual page refresh remounts the app.
Confirmed as web-UI-specific: OpenChamber (a third-party client using the same server API/event stream) does not exhibit this issue — server side is fine.
Relevant code:
// lines 162-165
export function resumeStreamAfterPageShow(event: PageTransitionEvent, start: () => unknown) {
if (!event.persisted) return
start()
}
// lines 325-328 (onMount)
makeEventListener(window, "pagehide", stop)
makeEventListener(window, "pageshow", (event) => resumeStreamAfterPageShow(event, start))
### Plugins
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### OpenCode version
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### Steps to reproduce
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### Terminal
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Activity
github-actions commentedon Sep 4, 2026
This issue might be a duplicate of an existing issue. Please check:
server-sdk.tsxnot reconnecting after tab is backgrounded and restored, with the samepagehide/pageshow+event.persistedmechanics identified as the problem.holny commentedon Sep 4, 2026
Same root cause as #39030 (the
pageshowhandler only restarts the stream after a bfcache restore) — picking both up in one fix there.aydemir commentedon Sep 12, 2026
Same issue on Android Chrome here: app goes to background, the SSE stream goes half-open, and nothing reconnects on foreground.
Our fix: aydemir/opencode@sse-only (e8ccb4e) — stall guard + watchdog timer + visibility/online reconnect in packages/app/src/context/server-sdk.tsx, with unit tests (server-sdk.test.ts, 22 passing).
Verified on a real device (3 sessions x ~90 tool calls, no hangs). Feel free to cherry-pick if useful, based on 193de13.
neriousy commentedon Oct 19, 2026
This is fixed in v2: the web app restarts its event stream on every pageshow, and resynchronizes after returning to the foreground following inactivity or regaining network connectivity. Upgrade with
npm i -g @opencode/cli@latest(or update the desktop app). If you still see this on v2, please open a new issue with the details.