DeepTutor v1.5.4 Release Notes

Release Date: 2026.07.24

A same-day maintenance follow-up to v1.5.3, focused on how chat feels: the post-answer "generating" stall is gone, IM partners render Markdown tables faithfully, and the JSON that models hand back parses more robustly. Drop-in — no migrations.

What's New

Chat responsiveness

• The seconds-long "generating…" stall after an answer finished streaming is eliminated: the turn's completion event now carries the persisted message ids so the frontend reconciles them in place instead of refetching and re-rendering the whole session, turn events flush in one transaction (#678), and the streaming autoscroll no longer forces a layout every frame.
• Pressing Enter while the assistant is still streaming no longer fires a second, interleaved message (#674).

Faithful IM tables

Markdown-table handling is unified across partner channels, fixing empty cells dropped from Slack (#679) and Feishu (#683) tables and empty rows misread as header separators (#682).

Sturdier LLM-output parsing

Structured output survives messier model responses: <think> reasoning tags are stripped before parsing (#675), a JSON value followed by adjacent values no longer breaks Deep Research extraction (#680), and the parser returns the longest decodable value instead of the first prefix it finds (#692).

Assorted fixes

• Quiz cards generated mid-stream are scoped to their own turn — a new quiz no longer inherits (and silently re-reports) the previous quiz's answers (#677).
• The create-KB form no longer loses typed input and loaded files while another knowledge base is indexing in the background (#691).
• Math Animator reads 500ms as milliseconds, not minutes (#681).

Upgrade Notes

Drop-in from v1.5.3: pip install -U deeptutor; Docker users pull ghcr.io/hkuds/deeptutor:latest. No migrations, no schema or config changes.

Full Changelog: https://github.com/HKUDS/DeepTutor/compare/v1.5.3...v1.5.4