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Java standard collections bypass safe mode

area:experimental:safeIssues tied to scala.language.experimental.safe modeIssues tied to scala.language.experimental.safe mode

itype:bug

Status: Open.

#25759 In scala/scala3;

· Linyxus opened on Apr 10, 2026

Unsoundness in CC with global objects and separate compilation

area:experimental:ccCapture checking relatedCapture checking related

itype:bug

Status: Open.

Bug

#25758 In scala/scala3;

· Linyxus opened on Apr 10, 2026

Reporting CanEqual as unused under strictEquality

itype:bug

stat:needs triageEvery issue needs to have an "area" and "itype" labelEvery issue needs to have an "area" and "itype" label

Status: Open.

#25755 In scala/scala3;

· felix-hedenstrom opened on Apr 10, 2026

Behavior of opaque type combined with inline method changed in 3.8.4

area:inline

area:opaque-types

itype:bug

regressionThis worked in a previous version but doesn't anymoreThis worked in a previous version but doesn't anymore

Status: Open.

#25754 In scala/scala3;

· mrdziuban opened on Apr 9, 2026

RuntimeException: Invalid pattern in Match node using subCases

itype:bug

stat:needs triageEvery issue needs to have an "area" and "itype" labelEvery issue needs to have an "area" and "itype" label

Status: Open.

#25746 In scala/scala3;

· mrdziuban opened on Apr 9, 2026

Compiler regression in type inferrence of Enum-singletons

area:enums

area:infer

itype:bug

regressionThis worked in a previous version but doesn't anymoreThis worked in a previous version but doesn't anymore

stat:needs bisectionNeed to use nightly builds and git bisect to find out the commit where this issue was introducedNeed to use nightly builds and git bisect to find out the commit where this issue was introduced

Status: Open.

#25742 In scala/scala3;

· felix-hedenstrom opened on Apr 9, 2026

trasparent typo in transparent inline given compiler error

area:reportingError reporting including formatting, implicit suggestions, etcError reporting including formatting, implicit suggestions, etc

better-errorsIssues concerned with improving confusing/unhelpful diagnostic messagesIssues concerned with improving confusing/unhelpful diagnostic messages

itype:enhancement

Status: Open.

#25741 In scala/scala3;

· DarrenBishop opened on Apr 9, 2026

export a.* in classes extending AnyVal causes runtime errors

itype:bug

stat:needs triageEvery issue needs to have an "area" and "itype" labelEvery issue needs to have an "area" and "itype" label

Status: Open.

#25739 In scala/scala3;

· coreywoodfield opened on Apr 8, 2026

Unexpected type widening after copy

itype:bug

stat:needs triageEvery issue needs to have an "area" and "itype" labelEvery issue needs to have an "area" and "itype" label

Status: Open.

#25735 In scala/scala3;

· felix-hedenstrom opened on Apr 8, 2026

unexpected compiler behavior of Range

stat:needs triageEvery issue needs to have an "area" and "itype" labelEvery issue needs to have an "area" and "itype" label

Status: Open.

#25730 In scala/scala3;

· jimka2001 opened on Apr 8, 2026

PostTyper: exponential compile time with chained transparent inline macro operations

Status: Open.

#25728 In scala/scala3;

· soronpo opened on Apr 8, 2026

Nested boundary: block silently catches break meant for outer boundary via type inference

itype:bug

stat:needs triageEvery issue needs to have an "area" and "itype" labelEvery issue needs to have an "area" and "itype" label

Status: Open.

#25727 In scala/scala3;

· haskiindahouse opened on Apr 8, 2026