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[FEATURE]: Land two-stage TUI streaming freeze fix for #36043 #48430
Description
- I have verified this feature I'm about to request hasn't been suggested before.
Description
Tracking issue for the fix plan — the freeze itself is reported in #36043,
this is not a re-report.
Diagnosis (from #41472): streaming pays O(n²) at two client-side stages.
Each PR applies and merges independently, in either order; together they
fully close the freeze:
- tui-delta-coalesce (fix(tui): coalesce message.part.delta store writes #48431) — coalesce
message.part.deltastore writes (V1) - markdown-live-relex (fix(session-ui): grow markdown live tail in place #48432) — grow the live markdown tail in place
Related: #41472 (root-cause analysis; tui-delta-coalesce supersedes it).
Done = both merged, at which point I'll close this issue.
Activity
dcerisano commentedon Oct 15, 2026
V2 status update: the markdown-live-relex half is ported and open as #55857 (
markdown-incremental-projection→dev). The V1 tui-delta-coalesce counterpart (#48431) remains V1-only and is not part of this PR.opencodejr commentedon Oct 28, 2026
Thanks for the thorough diagnosis and for tracking this so carefully.
This issue tracks fixes for OpenCode v1: #36043 was reported on 1.17.15, and #48431 and #48432 were both written for v1. Both PRs were closed unmerged because v1 no longer takes PRs, and v1 only gets fixes for critical bugs (data loss, security, crashes or breakage with no workaround). A temporary stall while a model streams doesn't meet that bar, so this is unlikely to land in v1, and the "both merged" condition here can't be met.
The v2 side is already moving:
@opencode/patchmark(it superseded your port fix(session-ui): optimize incremental markdown projection #55857)If you can still reproduce the TUI freeze on a current 2.x release (
opencode upgrade --major, see https://anoma.ly/notes/opencode-2-0), for example from per-delta store updates in the v2 TUI, please open a new v2 issue with the version, terminal, model and steps. It would go through the normal flow. Also reply here if you think the v1 freeze counts as critical.opencodejr commentedon Oct 29, 2026
Closing this as not planned. It tracks landing #48431 and #48432 in OpenCode v1. Both were closed unmerged because v1 no longer takes PRs and only gets critical fixes. We waited a day in case you could show the freeze is critical or also happens on v2, and there's been no reply.
The v2 side is tracked in #56202, and #57016 (incremental markdown parsing via
@opencode/patchmark) has been merged. If you can reproduce the TUI streaming freeze on a current 2.x release, please open a new issue with the version, terminal, model and steps. Thanks again for the detailed diagnosis.