nextcloud crashed on coming back from opened file

[thomas725]

Cause of error

Exception in thread "main" java.lang.RuntimeException: Unable to start activity ComponentInfo{com.nextcloud.client/com.owncloud.android.ui.activity.FileDisplayActivity}: java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.util.Stack
    at android.app.ActivityThread.performLaunchActivity(Unknown Source:697)
    at android.app.ActivityThread.handleLaunchActivity(Unknown Source:63)
    at android.app.servertransaction.LaunchActivityItem.execute(Unknown Source:12)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(Unknown Source:77)
    at android.app.servertransaction.TransactionExecutor.execute(Unknown Source:73)
    at android.app.ActivityThread$H.handleMessage(Unknown Source:127)
    at android.os.Handler.dispatchMessage(Unknown Source:19)
    at android.os.Looper.loopOnce(Unknown Source:176)
    at android.os.Looper.loop(Unknown Source:76)
    at android.app.ActivityThread.main(Unknown Source:155)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(Unknown Source:11)
    at com.android.internal.os.ZygoteInit.main(Unknown Source:309)
Caused by: Exception in thread "main" java.lang.ClassCastException: java.util.ArrayList cannot be cast to java.util.Stack
    at com.owncloud.android.ui.activity.FileDisplayActivity.loadSavedInstanceState(FileDisplayActivity.java:296)
    at com.owncloud.android.ui.activity.FileDisplayActivity.onCreate(FileDisplayActivity.java:269)
    at android.app.Activity.performCreate(Unknown Source:119)
    at android.app.Activity.performCreate(Unknown Source:1)
    at android.app.Instrumentation.callActivityOnCreate(Unknown Source:3)
    at android.app.ActivityThread.performLaunchActivity(Unknown Source:433)
    at android.app.ActivityThread.handleLaunchActivity(Unknown Source:63)
    at android.app.servertransaction.LaunchActivityItem.execute(Unknown Source:12)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(Unknown Source:77)
    at android.app.servertransaction.TransactionExecutor.execute(Unknown Source:73)
    at android.app.ActivityThread$H.handleMessage(Unknown Source:127)
    at android.os.Handler.dispatchMessage(Unknown Source:19)
    at android.os.Looper.loopOnce(Unknown Source:176)
    at android.os.Looper.loop(Unknown Source:76)
    at android.app.ActivityThread.main(Unknown Source:155)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(Unknown Source:11)
    at com.android.internal.os.ZygoteInit.main(Unknown Source:309)

App information

• ID: com.nextcloud.client
• Version: 30280090
• Build flavor: generic

Device information

• Brand: Redmi
• Device: joyeuse
• Model: Redmi Note 9 Pro
• Id: SKQ1.211019.001
• Product: joyeuse_global

Firmware

• SDK: 31
• Release: 12
• Incremental: V13.0.1.0.SJZMIXM