Feature "Highlight current line" partially broken

[engelhro]

Since some time the settings to highlight the current line (Appearance → Customize schemes… → Common Base → Highlight Current Line) are not fully respected anymore. I tried with both a pure text file as well as a Markdown file.

• The frame settings ("foreground color" and "size" attributes) are considered, changing them shows the desired effect.
• The other settings ("background color" and "font" attributes, probably also "alpha") are not considered, changing them shows no visual effect.

I know this has worked in the past, at least setting a background color for the current line. This might be broken for some time, I just consciously noticed it some days ago.

I tested with the most recent (I guess) beta 6.24.713.1 rc3 (ff261d0f).

Can someone confirm my observation and the possible bug? Or did I misinterpret some of the convoluted relationships between the various scheme settings and their hierarchy?