[Bug] Playground: output pane shows previous lesson’s grade after navigating to another lesson #20

New Issue

2026-04-28T22:41:44Z

spikerj commented

2026-04-28 22:41:44 +00:00

Summary

When submitting a lesson in the playground for grading, the output pane continues to show the graded result from the previous lesson after the user advances to another lesson.

Expected

Submit an answer → the output pane shows grading output for that submission.
When continuing to the next lesson, the output pane should be hidden (or cleared) until the user submits again for the lesson currently on screen.
While viewing a lesson, the pane must only reflect content for that lesson, not a prior one.

Actual

Stale grading output from the prior lesson remains visible after navigation.

Notes

Likely frontend state tied to playground lesson navigation (output-pane). Clear or collapse on lesson change; reset before showing new results after submit.

## Summary When submitting a lesson in the playground for grading, the **output pane** continues to show the graded result **from the previous lesson** after the user advances to another lesson. ## Expected - Submit an answer → the output pane shows grading output for **that submission**. - When continuing to **the next lesson**, the output pane should be **hidden** (or cleared) until the user submits again for the **lesson currently on screen**. - While viewing a lesson, the pane must only reflect content **for that lesson**, not a prior one. ## Actual Stale grading output from the prior lesson remains visible after navigation. ## Notes Likely frontend state tied to playground lesson navigation (`output-pane`). Clear or collapse on lesson change; reset before showing new results after submit.

outut-pane-shows-last-lesson-results.png

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spikerj commented

2026-05-05 04:02:08 +00:00

Resolved -- Added clearResult() method to ILanguageRuntimeAdapter interface and all 3 runner services (C#, Python, JS). Called this.runtime.clearResult() in selectLesson() so stale grade output from a previous lesson is cleared when navigating between lessons.

**Resolved** -- Added `clearResult()` method to `ILanguageRuntimeAdapter` interface and all 3 runner services (C#, Python, JS). Called `this.runtime.clearResult()` in `selectLesson()` so stale grade output from a previous lesson is cleared when navigating between lessons.

spikerj closed this issue

2026-05-05 04:03:04 +00:00

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