title: Xamarin Android JNI ERROR accessed deleted Global 0x000000
body: <p>I am having a uncatchable error like below.
  Where should I start to debug this kind of error?</p>
  <p>I guess this is a memory leak issue or referencing deleted object by GC.
  However, error message does not give me any clue why this is happening or where should I start to dig in...</p>
  <p>You can check out <a href="https://vimeo.com/548710444" rel="nofollow noreferrer">vimeo</a></p>
  <pre><code>JNI ERROR (app bug): accessed deleted Global 0x606a
  [java_vm_ext.cc] JNI DETECTED ERROR IN APPLICATION: use of deleted global reference 0x606a
  [java_vm_ext.cc] &quot;Thread-28&quot; prio=10 tid=34 Runnable
  [java_vm_ext.cc]   | group=&quot;main&quot; sCount=0 dsCount=0 flags=0 obj=0x13080000 self=0x7ac5a58c00
  [java_vm_ext.cc]   | sysTid=8181 nice=-10 cgrp=default sched=0/0 handle=0x7aaabfd4f0
  [java_vm_ext.cc]   | state=R schedstat=( 237903034 19270156 585 ) utm=20 stm=3 core=3 HZ=100
  [java_vm_ext.cc]   | stack=0x7aaa9fe000-0x7aaaa00000 stackSize=2MB
  [java_vm_ext.cc]   | held mutexes= &quot;mutator lock&quot;(shared held)
  [java_vm_ext.cc]   native: #00 pc 00000000003cb654  /system/lib64/libart.so 
  
  // ...
  
  [libc] Fatal signal 6 (SIGABRT), code -6 (SI_TKILL) in tid 8181 (GLThread 25), pid 7983 (ngoslab.lithium)
  </code></pre>
  <p>Here is full <a href="https://drive.google.com/file/d/1UCMnSU0z1zfG3nshuyOuPULX5Qp5wueG/view?usp=sharing" rel="nofollow noreferrer">error log</a></p>