CSS backdrop-filter Unloaded?

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Description of the issue:
The CSS backdrop-filter seems to unload from the renderer after exiting the app and reopening or spending time in a different tab. Once Brave suspends the app, the backdrop-filter is no longer active.
How can this issue be reproduced?

  1. Spend enough time in a different tab to have Brave suspend the backdrop-filter tab (I discovered this bug on https://splch.dev)
  2. Exit the app for a while and reopen the tab (not too sure here)

Expected result:
The backdrop-filter attribute should remain rendered.
Brave Version( check About Brave):

Version 1.27.1 (21.6.22.16)

Mobile Device details
iPhone SE 2
Additional Information:

Demo:

image