When highlight current line is true in gtk.sourceview (version 4), highlight color makes text unreadable in dark mode

[phase1geo]

What Happened?

When a Gtk.SourceView (version 4 or later) widget is instantiated and sets the "highlight_current_line" property to a value of true, using a dark mode system setting does not seem to change the color of the highlighted line, making the text color nearly impossible to read.

Steps to Reproduce

See "What Happened" description.

Expected Behavior

When in dark mode, the highlight line color should be adjusted to a darker (but not as dark color as the text background) to help make both the text readable and the highlight line indicator visible.

OS Version

6.x (Odin)

Software Version

Latest release (I have run all updates)

Log Output

No response

Hardware Info

No response