Incompatible Changes in IntelliJ Platform and Plugins API 2025.*

List of known Breaking API Changes in 2025.*

2025.2

Code scheduled with SwingUtilities.invokeLater and SwingUtilities.invokeAndWait does not hold the write-intent lock: Consider using an explicit wrapping with ReadAction.compute() or WriteAction.run(ThrowableRunnable<E>). See .
Coroutines running under Dispatchers.Main do not hold the write-intent lock: To restore the old behavior, consider using Dispatchers.EDT. See .
com.intellij.psi.xml.XmlTokenType class now interface: Use XmlTokenType constants directly.
Class com.intellij.psi.xml.XmlElementType no longer extends com.intellij.psi.xml.XmlTokenType: Update code usages.
filetype.xml.description property removed from resource bundle messages.XmlPsiBundle: Use property from resource bundle messages.XmlParserBundle
xml.parsing.closing.tag.matches.nothing property removed from resource bundle messages.XmlPsiBundle: Use property from resource bundle messages.XmlParserBundle
xml.parsing.unclosed.attribute.value property removed from resource bundle messages.XmlPsiBundle: Use property from resource bundle messages.XmlParserBundle
xml.parsing.unescaped.ampersand.or.nonterminated.character.entity.reference property removed from resource bundle messages.XmlPsiBundle: Use property from resource bundle messages.XmlParserBundle

com.intellij.openapi.externalSystem.service.internal.ExternalSystemProcessingManager class now interface: Recompile code usages.

org.jetbrains.kotlin.KtFakeSourceElement class renamed to org.jetbrains.kotlin.KtFakePsiSourceElement: Update code usages.
org.jetbrains.kotlin.ir.linkage.IrDeserializer.IrLinkerExtension class removed: This class was removed from the Kotlin compiler and is no longer available.
org.jetbrains.kotlin.ir.builders.TranslationPluginContext class removed: This class was removed from the Kotlin compiler and is no longer available.
org.jetbrains.kotlin.analysis.decompiler.stub.file.ClsClassFinder.isKotlinInternalCompiledFile$default(ClsClassFinder, VirtualFile, byte[], int, Object) method removed: Recompile code usages.

com.jetbrains.rd.ide.model.AddToGroupRuleModel class removed: Remove all usages.
com.jetbrains.rd.ide.model.ActionConstraintModel class removed: Remove all usages.

com.intellij.lang.javascript.service.JSAsyncLanguageServiceBase.JSLanguageServiceInfoReporter class moved to package com.intellij.lang.javascript.service: Update all usages
com.intellij.lang.javascript.JSElementTypes.toModuleContentType(IElementType type) method removed: Use com.intellij.lang.javascript.JSModuleContentType.toModuleContentType(IElementType type) method instead
com.intellij.lang.javascript.BaseJSTokenTypes class removed: Use com.intellij.lang.javascript.JSTokenTypes class instead
com.intellij.lang.javascript.highlighting.TypeScriptHighlighter(DialectOptionHolder dialectOptionsHolder, boolean skipKeywordHighlights) constructor removed: Use constructor without skipKeywordHighlights parameter
com.intellij.lang.javascript.dialects.ECMA6SyntaxHighlighterFactory.ECMA6SyntaxHighlighter(DialectOptionHolder dialectOptionsHolder, boolean skipKeywordHighlights) constructor removed: Use constructor without skipKeywordHighlights parameter
com.intellij.lang.javascript.highlighting.JSHighlighter(DialectOptionHolder dialectOptionsHolder, boolean skipKeywordHighlights) constructor removed: Use constructor without skipKeywordHighlights parameter