Crash on clicking on Realms button

Step to reproduce

1. Enter Game with Official 1.13

2. Go into Minecraft Realms

3. And the game instantly crashed

   Description: Rendering screen
   
   java.lang.IllegalStateException: Child not present in child list:com.mojang.realmsclient.RealmsMainScreen$ServerSelectionList@2cf09576
   	at cio.b(SourceFile:180)
   	at net.minecraft.realms.RealmsScreen.removeWidget(SourceFile:176)
   	at com.mojang.realmsclient.RealmsMainScreen.drawPopup(RealmsMainScreen.java:978)
   	at com.mojang.realmsclient.RealmsMainScreen.render(RealmsMainScreen.java:846)
   	at cio.a(SourceFile:99)
   	at ctn.a(SourceFile:792)
   	at cfi.c(SourceFile:847)
   	at cfi.a(SourceFile:392)
   	at net.minecraft.client.main.Main.main(SourceFile:144)