diff --git a/idea-plugin/build.gradle.kts b/idea-plugin/build.gradle.kts
index 8e7fdb866e..0030b61e88 100644
--- a/idea-plugin/build.gradle.kts
+++ b/idea-plugin/build.gradle.kts
@@ -1,9 +1,9 @@
-import org.jetbrains.kotlin.gradle.dsl.KotlinJvmCompile
+import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
 
 plugins {
     id("java")
     id("org.jetbrains.kotlin.jvm") version "1.5.10"
-    id("org.jetbrains.intellij") version "1.10.1"
+    id("org.jetbrains.intellij") version "1.12.0"
     id("org.jetbrains.changelog") version "1.3.1"
 }
 
@@ -44,11 +44,11 @@ tasks.buildSearchableOptions {
 tasks {
     // Set the compatibility versions to 1.8
     withType<JavaCompile> {
-        sourceCompatibility = "1.8"
-        targetCompatibility = "1.8"
+        sourceCompatibility = "11"
+        targetCompatibility = "11"
     }
     withType<KotlinJvmCompile> {
-        kotlinOptions.jvmTarget = "1.8"
+        kotlinOptions.jvmTarget = "11"
     }
 
     publishPlugin {
diff --git a/idea-plugin/gradle.properties b/idea-plugin/gradle.properties
index 0755c4f3e8..0ee97128d8 100644
--- a/idea-plugin/gradle.properties
+++ b/idea-plugin/gradle.properties
@@ -7,8 +7,8 @@ deploy.version=0.1-SNAPSHOT
 plugin.channels=snapshots
 # Intellij since-build should be updated directly in src/main/resources/META-INF/plugin.xml
 # See https://jb.gg/intellij-platform-builds-list for available build versions.
-plugin.verifier.ide.versions=2021.3, 2022.1, 2022.2
+plugin.verifier.ide.versions=2022.1, 2022.2, 2022.3
 
 platform.type=IC
-platform.version=2021.3
+platform.version=2022.1.1
 platform.download.sources=true
diff --git a/idea-plugin/src/main/kotlin/org/jetbrains/compose/desktop/ide/preview/PreviewFloatingToolbarProvider.kt b/idea-plugin/src/main/kotlin/org/jetbrains/compose/desktop/ide/preview/PreviewFloatingToolbarProvider.kt
index 0a05eb0a6f..e8a8f3543c 100644
--- a/idea-plugin/src/main/kotlin/org/jetbrains/compose/desktop/ide/preview/PreviewFloatingToolbarProvider.kt
+++ b/idea-plugin/src/main/kotlin/org/jetbrains/compose/desktop/ide/preview/PreviewFloatingToolbarProvider.kt
@@ -8,13 +8,17 @@ package org.jetbrains.compose.desktop.ide.preview
 import com.intellij.openapi.Disposable
 import com.intellij.openapi.actionSystem.CommonDataKeys
 import com.intellij.openapi.actionSystem.DataContext
+import com.intellij.openapi.diff.impl.DiffUtil
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.editor.event.CaretEvent
 import com.intellij.openapi.editor.event.CaretListener
 import com.intellij.openapi.editor.toolbar.floating.AbstractFloatingToolbarProvider
 import com.intellij.openapi.editor.toolbar.floating.FloatingToolbarComponent
+import com.intellij.openapi.fileEditor.FileDocumentManager
 import com.intellij.openapi.project.Project
+import com.intellij.testFramework.LightVirtualFileBase
 import com.intellij.util.concurrency.AppExecutorUtil
+import org.jetbrains.kotlin.idea.KotlinFileType
 
 class PreviewFloatingToolbarProvider : AbstractFloatingToolbarProvider(PREVIEW_EDITOR_TOOLBAR_GROUP_ID) {
     override val autoHideable = false
@@ -22,7 +26,9 @@ class PreviewFloatingToolbarProvider : AbstractFloatingToolbarProvider(PREVIEW_E
     // todo: disable if not in Compose JVM module
     override fun register(dataContext: DataContext, component: FloatingToolbarComponent, parentDisposable: Disposable) {
         val editor = dataContext.getData(CommonDataKeys.EDITOR) ?: return
-        registerComponent(component, editor, parentDisposable)
+        if (isInsideMainKtEditor(editor)) {
+            registerComponent(component, editor, parentDisposable)
+        }
     }
 
     private fun registerComponent(
@@ -50,11 +56,24 @@ internal class PreviewEditorToolbarVisibilityUpdater(
     }
 
     private fun updateVisibility() {
-        val parentPreviewFun = parentPreviewAtCaretOrNull(editor)
-        if (parentPreviewFun != null) {
-            toolbar.scheduleShow()
-        } else {
-            toolbar.scheduleHide()
+        if (!editor.isDisposed) {
+            val parentPreviewFun = parentPreviewAtCaretOrNull(editor)
+            if (parentPreviewFun != null) {
+                toolbar.scheduleShow()
+            } else {
+                toolbar.scheduleHide()
+            }
         }
     }
+}
+
+private fun isInsideMainKtEditor(editor: Editor): Boolean =
+    !DiffUtil.isDiffEditor(editor) && editor.isKtFileEditor()
+
+private fun Editor.isKtFileEditor(): Boolean {
+    val documentManager = FileDocumentManager.getInstance()
+    val virtualFile = documentManager.getFile(document) ?: return false
+    return virtualFile !is LightVirtualFileBase
+            && virtualFile.isValid
+            && virtualFile.fileType == KotlinFileType.INSTANCE
 }
\ No newline at end of file