Who contributed to Elixir & Phoenix on August 19, 2026?

5 developers shipped this update, including Daniel Kukula, jonatanklosko, tomciopp, Oliver Kriska, and lukaszsamson.

What were the notable Elixir & Phoenix updates?

Clear focus stack entries on view teardown, Fix missing return after child join failure, and Fix join completion for empty recovery markup (#4390).

Elixir & Phoenix

Elixir, Phoenix, LiveView, and Ecto - the BEAM web stack

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The Wire · Showcase

LiveView memory leak fix leads overnight Elixir cleanup

By RepoJournal · Filed 07:01 UTC on August 19, 2026 · About Elixir & Phoenix

5 people shipped this

lukaszsamson @lukaszsamson 3 cited

Daniel Kukula @dkuku 2 cited

tomciopp @tomciopp 1 cited

Oliver Kriska @oliver-kriska 1 cited

jonatanklosko @jonatanklosko

A handful of pull requests across Elixir and Phoenix are quietly fixing leaks and edge cases that have been nagging at production apps.

The standout is a memory leak fix in Phoenix LiveView that clears the focus stack on view teardown and live navigation [1]. Any push_focus without a matching pop_focus now releases its detached element, so long-lived LiveView apps stop growing in memory. In the same repo, a fix for a missing return after child join failure [2] prevents destroy() from being called twice and errors from being shown on destroyed views, while another patch ensures join completion still fires callbacks when recovery markup is empty [3]. Over in elixir-lang, PR #15767 removes an intermediate list in elixir_interpolation's hex_to_int [4], saving a slice of compile-time work. That PR's author, dkuku, says "list_to_integer can be removed" in one more spot [5], a follow-up to their earlier cleanup. Meanwhile, File.cp and File.cp_r get a performance boost by using chmod instead of stat and write_stat [6], cutting a file-server round trip per copy. And Phoenix docs are finally getting a Markdown formatter, following ExDoc's new default, with the PR noting "Phoenix already resolves ExDoc 0.40.3, but its explicit formatter list prevents that new default from applying" [7].

Action items

→ Pull the LiveView focus stack fix and child join fixes into your app phoenixframework/phoenix_live_view [immediate]
→ Upgrade to Elixir main to pick up the hex_to_int and file copy optimizations elixir-lang/elixir [monitor]
→ Keep an eye on the Phoenix docs Markdown formatter PR for the next release phoenixframework/phoenix [monitor]

References

[1] Clear focus stack entries on view teardown ↗ phoenixframework/phoenix_live_view
[2] Fix missing return after child join failure ↗ phoenixframework/phoenix_live_view
[3] Fix join completion for empty recovery markup (#4390) phoenixframework/phoenix_live_view
[4] Remove intermediate list in elixir_interpolation hex_to_int (#15767) elixir-lang/elixir
[5] Remove intermediate list in elixir_interpolation hex_to_int ↗ elixir-lang/elixir
[6] perf: Copy file mode with chmod instead of stat and write_stat ↗ elixir-lang/elixir
[7] Add markdown formatter to docs output ↗ phoenixframework/phoenix

Quick answers

What shipped in Elixir & Phoenix on August 19, 2026?: A handful of pull requests across Elixir and Phoenix are quietly fixing leaks and edge cases that have been nagging at production apps. In total, 11 commits and 8 pull requests landed.
Who contributed to Elixir & Phoenix on August 19, 2026?: 5 developers shipped this update, including Daniel Kukula, jonatanklosko, tomciopp, Oliver Kriska, and lukaszsamson.
What were the notable Elixir & Phoenix updates?: Clear focus stack entries on view teardown, Fix missing return after child join failure, and Fix join completion for empty recovery markup (#4390).

LIVE VIEW HOOKS GET THE ELOQUENT TREATMENT

Phoenix Live View is shipping a passel of hook and JS-client fixes today, headlined by new beforeUpdate arguments that hand you more control over a hook's lifespan.

elixir 17 shipped

Elixir & Phoenix Aug 18

Phoenix LiveView cleans up its act

Two upstream fixes in phoenix_live_view squelch lingering timers and stale submits that have been biting production apps.

elixir 6 shipped

Elixir & Phoenix Aug 17

ELIXIR CORE SHIPS CALENDAR SPEED SWEEP, PHOENIX LIVE VIEW FIXES UI STALLS

Three precision optimizations land in Elixir core with 1.75x speedups on date and time comparisons, while Phoenix Live View plugs a bug that was freezing UI for 200ms on zero-duration transitions.

elixir 15 shipped

Elixir & Phoenix Aug 16

ELIXIR CORE CUTS ALLOCATIONS ACROSS STRING AND AST OPERATIONS

Thomas Cioppettini landed four performance wins overnight that eliminate unnecessary allocations in List.myers_difference, String case conversion, and Macro tree walkers.

elixir 17 shipped

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