Day theme has Classic theme's messaging box. It used to look like it had no surrounding field before and a separation bar only appeared when scrolling up.
Steps to reproduce
Go to Settings > Appearance > Choose Day or Night theme
Open any chat
Current result
Messaging box has a gray surrounding field around the inner white box (Current.jpg).
Expected result
Messaging box to not have a surrounding field, to essentially be transparent at the end of chat and to only show signs of that field when scrolling up (like before, Previous.jpg).
Possible cause
Different colour surrounding is there now because of new translucent elements across the app, but it could still be fixed with that.
I messed around with themes myself and achieved initially transparent box with signs of existence when scrolling (Ideal.mp4).
For that:
chat_inputPanel_panelBg needs to be changed to e5ffffff.
chat_inputPanel_panelSeparator needs to be changed to 00000000.
And lastly the chat_inputPanel_inputStroke is a little too light gray now as well. Should be more like d9dbde.