[Bug] Bluelight filter settings unstable

[simurq]

Sometimes (for reasons unknown to me) the Bluelight filter set during reading dumps its settings upon exiting the book: checkbox unchecked, filtering percentage down to 3% or other crazy number.

I noticed though that settings remain intact when set from the main app settings, not in reading mode. But I cannot explain the reasons any further. Thank you for taking care! 🙏🏼