Image Attachment Caption in iOS Dark Mode is Difficult to Read Due to Black Font on Dark Gray Background

[Thireus]

• [x] I have searched open and closed issues for duplicates
• [x] I am submitting a bug report for existing functionality that does not work as intended
• [x] This isn't a feature request or a discussion topic

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Bug description

On iOS dark mode, the font colour of the image attachment caption is black on a dark gray (and semi-transparent) background, which makes it very difficult to read the caption.

Steps to reproduce

• Send an image as attachment with caption to an iOS device that is using dark mode
• Tap the image preview to see the image in full screen with the image caption displayed at the bottom
• Observe that the image caption is almost unreadable

Actual result: The caption font colour is black when dark mode is used.

Expected result: The caption font colour needs to be a light colour when dark mode is used.

Screenshots

For privacy reasons I have masked (red areas) most of the screenshot and left the first few words of the caption untouched so you can see what I am referring to.

Device info

Device: iPhone

iOS version: 17.5.1

Signal version: 7.23

Link to debug log

N/A