Black rectangle blocks chat list view ("Reduce Transparency" enabled)

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• I am submitting a bug report for existing functionality that does not work as intended
• This isn't a feature request or a discussion topic

Bug description

With the new Liquid Glass implementation in Signal (great effort by the team!) chat list and message are blocked by black rectangles. Since the design changes in iOS 26, the “Reduce Transparency" feature has been used much more frequently. Enabling "Reduce Transparency" triggers this behaviour.

Steps to reproduce

• Enable "Reduce Transparency" (many people recommend it for iOS 26 Liquid Glass design)
• Write a message in chat
• Go back to chat list view
• There should be an black rectangle

Actual result: Black rectangle blocks chat list view.

Expected result: There shouldn't be a black rectangle.

Screenshots

Device info

Device: iPhone SE (2nd gen 2020)

iOS version: 26.2

Signal version: 7.88 (1238)

Reproduce the issue on an iPhone SE (2nd gen) running iOS 26.2 with Reduce Transparency enabled, then compare the chat list and message views in Signal 7.88. Trace the UI path for those views and determine which rendering state produces the black rectangle; done means both views remain unobstructed with the setting enabled.