Get NullPointerException on an ImageButton

[Terrible-Tornado]

• I have searched open and closed issues for duplicates
• I am submitting a bug report for existing functionality that does not work as intended
• I have read https://github.com/signalapp/Signal-Android/wiki/Submitting-useful-bug-reports
• This isn't a feature request or a discussion topic

---

Bug description

On RoutingActivity or ConversationActivity?(forget), click an ImageButton somewhere top-left then caused a NullPointerException

Steps to reproduce

Try to reproduce but failed, hope the stack trace info could help

Actual result: Crush and fall back to the launcher
Expected result: Normal operation

Device info

Device: Emulator Google Pixel 2
Android version: 9.0
Signal version: 6.3.3

Link to debug log

FATAL EXCEPTION: main
Process: org.thoughtcrime.securesms, PID: 20218
java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getVisibility()' on a null object reference
	at org.thoughtcrime.securesms.util.ViewUtil.animateIn(ViewUtil.java:153)
	at org.thoughtcrime.securesms.util.ViewUtil.fadeIn(ViewUtil.java:111)
	at org.thoughtcrime.securesms.conversationlist.ConversationListFragment.fadeInButtonsAndMegaphone(ConversationListFragment.java:1156)
	at org.thoughtcrime.securesms.conversationlist.ConversationListFragment.access$1700(ConversationListFragment.java:191)
	at org.thoughtcrime.securesms.conversationlist.ConversationListFragment$2.onSearchClosed(ConversationListFragment.java:686)
	at org.thoughtcrime.securesms.components.Material3SearchToolbar.collapse(Material3SearchToolbar.kt:70)
	at org.thoughtcrime.securesms.components.Material3SearchToolbar._init_$lambda-0(Material3SearchToolbar.kt:41)
	at org.thoughtcrime.securesms.components.Material3SearchToolbar.$r8$lambda$UwIQRx8FYust8BhIXYkCLg_Ekys(Unknown Source:0)
	at org.thoughtcrime.securesms.components.Material3SearchToolbar$$ExternalSyntheticLambda0.onClick(Unknown Source:2)
	at android.view.View.performClick(View.java:6597)
	at android.view.View.performClickInternal(View.java:6574)
	at android.view.View.access$3100(View.java:778)
	at android.view.View$PerformClick.run(View.java:25885)
	at android.os.Handler.handleCallback(Handler.java:873)
	at android.os.Handler.dispatchMessage(Handler.java:99)
	at android.os.Looper.loop(Looper.java:193)
	at android.app.ActivityThread.main(ActivityThread.java:6669)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

[cody-signal]

Can you provide a full debuglog please?