The app crashes after quickly enabling/disabling PB mode a few times while having multiple windows opened

[Softvision-RemusDranca]

[Affected Versions]:

• Firefox Reality 1.4-32402232 (08.29.2019)

[Affected Platforms]:

• Oculus Go - Android 7.1.2
• Oculus Quest - Android 7.1.1

[Prerequisites]:

• Have the latest Firefox Reality 1.4-32402232 (08.29.2019) apk. installed.
• The headset is turned on and the app is opened.

[Steps to reproduce]:

1. Open 2 new windows by clicking the "+" button 2 times.
2. Click the "Private Browsing" button from the same tray.
3. Open 2 new windows while in Private browsing mode.
4. Quickly click the "Private Browsing" button for ~10 times.
5. Observe the behavior.

[Expected results]:

• Private Browsing mode is successfully enabled/disabled each time.

[Actual results]:

• The app crashes.

[Notes]:

• On Oculus Quest device I have encountered an additional intermittent behavior, where the app freezes and the device needs to be restarted.
• I was not able to reproduce this issue on HTC Vive Focus Plus device.
• Attached are screen recordings of the issue for both devices and the crash report:
  • Oculus Go recording: link
  • Oculus Quest recording: link
  • Crash report: link

[bluemarvin]

While I can't reproduce the crash, we seem to be leaking surfaces from the VR compositor. After a certain point they seem to get exhausted and all new layers are rendered as large black squares:

[bluemarvin]

From my testing this is only an issue on the Quest now. #1707 seems to have fixed it on the Go in combination with a system update.

[Softvision-RemusDranca]

I've retested this issue on Oculus Go device and it's no longer reproducible with the latest 1.4-32420004 (RC1) build.

[bluemarvin]

Fixed on Quest by #1716

[Softvision-RemusDranca]

It seems that the tables have turned, now the issue is not reproducible on Oculus Quest and again reproducible on Oculus GO with the 1.4-32450938 (RC2) build.
Here is the link for the crash report on Oculus GO.
Considering this I will reopen this issue.

[MortimerGoro]

I can reproduce it on 64 bit builds for Oculus Go. It works ok on 32bit builds

[bluemarvin]

Looks like #1716 is related to the crash on Go.

[Softvision-GeluHaiduc]

I have verified that this issue is no longer reproducible with the latest Firefox Reality 1.4-32481747 RC3 installed on the Oculus Go, Quest and HTC Vive Focus Plus headsets.
Now, the app doesn't crash after quickly enabling/disabling PB mode a few times while having multiple windows opened.