# Prefect 3.8.3.dev1 — 3.8.3.dev1: Nightly Development Release

- Product: Prefect (https://whatsnew.fyi/product/prefect)
- Vendor: Prefect
- Date: 2026-08-11
- Version: 3.8.3.dev1
- Original notes: https://github.com/PrefectHQ/prefect/releases/tag/3.8.3.dev1
- Permalink: https://whatsnew.fyi/product/prefect/releases/3.8.3.dev1
- Labels: Pre-release

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Block submission when a required array parameter is emptied in ui-v2
- **fixed** — Render sanitized inline HTML in markdown content in ui-v2
- **fixed** — Stop applying inline code styling inside fenced code blocks in ui-v2
- **fixed** — Select the matching enum branch for anyOf string values in ui-v2 schema forms
- **fixed** — Persist explicit null values from the schema form null branch
- **fixed** — Close in Snowflake no longer swallows a failing cursor reset

<!-- Release notes generated using configuration in .github/release.yml at main -->

##### What's Changed
###### Enhancements ➕➕
* Block submission when a required array parameter is emptied in ui-v2 by @devin-ai-integration[bot] in https://github.com/PrefectHQ/prefect/pull/22750
###### Bug Fixes 🐞
* fix(ui-v2): render sanitized inline HTML in markdown content by @devin-ai-integration[bot] in https://github.com/PrefectHQ/prefect/pull/22763
* fix(ui-v2): stop applying inline code styling inside fenced code blocks by @devin-ai-integration[bot] in https://github.com/PrefectHQ/prefect/pull/22771
* Select the matching enum branch for anyOf string values in ui-v2 schema forms by @devin-ai-integration[bot] in https://github.com/PrefectHQ/prefect/pull/22754
* Persist explicit null values from the schema form null branch by @devin-ai-integration[bot] in https://github.com/PrefectHQ/prefect/pull/22774
###### Documentation 📓
* docs: Fix block end by @cbrown1234 in https://github.com/PrefectHQ/prefect/pull/22802
###### Uncategorized
* Make FileSystemLockManager hold-timeout tests time-independent by @devin-ai-integration[bot] in https://github.com/PrefectHQ/prefect/pull/22716
* chore(deps): Update github actions by @prefect-renovate[bot] in https://github.com/PrefectHQ/prefect/pull/22775
* chore(deps): Update prom/prometheus Docker tag to v3 by @prefect-renovate[bot] in https://github.com/PrefectHQ/prefect/pull/22798
* chore(deps): Update dependency websockets to v16 by @prefect-renovate[bot] in https://github.com/PrefectHQ/prefect/pull/22793
* Preserve a statement cache size of 0 by @ckarnell in https://github.com/PrefectHQ/prefect/pull/22767
* fix(snowflake): close() swallows a failing cursor reset by @noron12234 in https://github.com/PrefectHQ/prefect/pull/22800

##### New Contributors
* @prefect-renovate[bot] made their first contribution in https://github.com/PrefectHQ/prefect/pull/22775
* @ckarnell made their first contribution in https://github.com/PrefectHQ/prefect/pull/22767
* @noron12234 made their first contribution in https://github.com/PrefectHQ/prefect/pull/22800

**Full Changelog**: https://github.com/PrefectHQ/prefect/compare/3.8.2...3.8.3.dev1