IssueTracker

I'm having the same problem. The error highlighting feels very unresponsive. Sometimes I even have to close the file for it to clean the error line from the tab.

It looks like this might be related to the Mac touchbar support. Both of the freezes are pointing to the same stackframes, where it looks like the touchbar support is busy updating an *icon* related to running activities, which seems to be doing something really expensive (parsing manifests), which is then going into class loading.

This is in the run machinery.
"AWT-EventQueue-0" prio=0 tid=0x0 nid=0x0 runnable
     java.lang.Thread.State: RUNNABLE
 (in native)
        at java.util.zip.ZipFile.open(Native Method)
        at java.util.zip.ZipFile.<init>(ZipFile.java:219)
        at java.util.zip.ZipFile.<init>(ZipFile.java:149)
        at java.util.zip.ZipFile.<init>(ZipFile.java:120)
        at com.intellij.util.lang.JarLoader.getZipFile(JarLoader.java:237)
        at com.intellij.util.lang.JarLoader.getResource(JarLoader.java:157)
        at com.intellij.util.lang.ClassPath$ResourceStringLoaderIterator.process(ClassPath.java:346)
        at com.intellij.util.lang.ClassPath$ResourceStringLoaderIterator.process(ClassPath.java:342)
        at com.intellij.util.lang.ClasspathCache.iterateLoaders(ClasspathCache.java:98)
        at com.intellij.util.lang.ClassPath.getResource(ClassPath.java:109)
        at com.intellij.util.lang.UrlClassLoader._findClass(UrlClassLoader.java:237)
        at com.intellij.ide.plugins.cl.PluginClassLoader.loadClassInsideSelf(PluginClassLoader.java:147)
        at com.intellij.ide.plugins.cl.PluginClassLoader.tryLoadingClass(PluginClassLoader.java:74)
        at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:61)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at com.android.tools.idea.model.MergedManifest.getApiVersion(MergedManifest.java:540)
        at com.android.tools.idea.model.MergedManifest.syncWithReadPermission(MergedManifest.java:499)
        at com.android.tools.idea.model.MergedManifest$$Lambda$3188/459221649.run(Unknown Source)
        at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:925)
        at com.android.tools.idea.model.MergedManifest.sync(MergedManifest.java:372)
        at com.android.tools.idea.model.MergedManifest.getActivities(MergedManifest.java:550)
        at com.android.tools.idea.run.activity.DefaultActivityLocator.lambda$computeDefaultActivity$0(DefaultActivityLocator.java:79)
        at com.android.tools.idea.run.activity.DefaultActivityLocator$$Lambda$3187/1683877759.compute(Unknown Source)
        at com.intellij.openapi.project.DumbService.lambda$runReadActionInSmartMode$0(DumbService.java:79)
        at com.intellij.openapi.project.DumbService$$Lambda$1109/1543342817.run(Unknown Source)
        at com.intellij.openapi.project.DumbService.runReadActionInSmartMode(DumbService.java:110)
        at com.intellij.openapi.project.DumbService.runReadActionInSmartMode(DumbService.java:79)
        at com.android.tools.idea.run.activity.DefaultActivityLocator.computeDefaultActivity(DefaultActivityLocator.java:78)
        at com.android.tools.idea.run.activity.DefaultActivityLocator.validate(DefaultActivityLocator.java:65)
        at com.android.tools.idea.run.editor.DefaultActivityLaunch$State.checkConfiguration(DefaultActivityLaunch.java:49)
        at com.android.tools.idea.run.AndroidAppRunConfigurationBase.checkConfiguration(AndroidAppRunConfigurationBase.java:113)
        at com.android.tools.idea.run.AndroidRunConfigurationBase.validate(AndroidRunConfigurationBase.java:190)
        at com.android.tools.idea.run.AndroidRunConfigurationBase.checkConfiguration(AndroidRunConfigurationBase.java:123)
        at com.intellij.execution.impl.RunnerAndConfigurationSettingsImpl.checkSettings(RunnerAndConfigurationSettingsImpl.kt:321)
        at com.intellij.execution.RunnerAndConfigurationSettings.checkSettings(RunnerAndConfigurationSettings.java:116)
        at com.intellij.execution.impl.TimedIconCache.calcIcon(TimedIconCache.kt:66)
        at com.intellij.execution.impl.TimedIconCache.access$calcIcon(TimedIconCache.kt:18)
        at com.intellij.execution.impl.TimedIconCache$get$$inlined$write$lambda$1.fun(TimedIconCache.kt:50)
        at com.intellij.execution.impl.TimedIconCache$get$$inlined$write$lambda$1.fun(TimedIconCache.kt:18)
        at com.intellij.ui.DeferredIconImpl.evaluate(DeferredIconImpl.java:282)
        at com.intellij.ui.DeferredIconImpl.retrieveIcon(DeferredIconImpl.java:274)
        at com.intellij.openapi.util.IconLoader.getOrigin(IconLoader.java:829)
        at com.intellij.openapi.util.IconLoader.getDarkIcon(IconLoader.java:502)
        at com.intellij.ui.mac.touchbar.TBItemButton.update(TBItemButton.java:181)
        at com.intellij.ui.mac.touchbar.TBItemAnActionButton.updateView(TBItemAnActionButton.java:162)
        at com.intellij.ui.mac.touchbar.TouchBar.lambda$updateActionItems$5(TouchBar.java:255)
        at com.intellij.ui.mac.touchbar.TouchBar$$Lambda$2023/1091692950.accept(Unknown Source)
        at com.intellij.ui.mac.touchbar.ItemsContainer.lambda$forEachDeep$2(ItemsContainer.java:144)
        at com.intellij.ui.mac.touchbar.ItemsContainer$$Lambda$2024/329411827.accept(Unknown Source)
        at java.util.ArrayList.forEach(ArrayList.java:1251)
        at com.intellij.ui.mac.touchbar.ItemsContainer.forEachDeep(ItemsContainer.java:139)
        at com.intellij.ui.mac.touchbar.TouchBar.forEachDeep(TouchBar.java:236)
        at com.intellij.ui.mac.touchbar.TouchBar.updateActionItems(TouchBar.java:245)
        at com.intellij.ui.mac.touchbar.TouchBar.onBeforeShow(TouchBar.java:229)
        at com.intellij.ui.mac.touchbar.StackTouchBars$TouchBarHolder._setNextTouchBar(StackTouchBars.java:161)
        at com.intellij.ui.mac.touchbar.StackTouchBars$TouchBarHolder.lambda$setTouchBar$0(StackTouchBars.java:145)
        at com.intellij.ui.mac.touchbar.StackTouchBars$TouchBarHolder$$Lambda$2004/1459246220.actionPerformed(Unknown Source)

I've the toolbar disabled, if that information helps

Instead of showing custom buttons, they are fixed to the traditional layout (play, pause, etc.)