A drop-down arrow is wrongly displayed when long clicking in a area with no content

[Softvision-RemusDranca]

[Affected Versions]:

• Firefox Reality Firefox Reality 6-33112229 RC4 (f2e90af) build.

[Affected Platforms]:

• Oculus Quest - Android 7.1.1
• HTC Vive Focus Plus - Android 7.1.2

[Prerequisites]:

• The headset is turned on and the browser is opened.

[Steps to reproduce]:

1. Navigate to a website.
2. Long click on area that has no content.
3. Observe the behavior.

[Expected results]:

• Nothing happens.

[Actual results]:

• A drop-down arrow is displayed.

[Notes]:

• This issue can also be reproducible if the pointer is focused between text rows and long clicked which can be confusing for the end user.
• The drop-down arrow can't be dismissed by clicking again on the page or by scrolling it.
• The drop-down arrow is dismissed if the page is refreshed or if another page is opened or by focusing another window.
• Attached is a screen recording of the issue: link

[Softvision-RemusDranca]

I have verified this issue and it's no longer reproducible with the latest Firefox Reality version 6 RC5 (33a031c).

Tested on the Oculus Quest (Android 7.1.1), Oculus Go (Android 7.1.2), HTC Vive Focus Plus (Android 7.1.2) and HTC Vive Focus (Android 7.1.2) devices.