Transparent background doesn't become transparent foreground when rendered in reverse video

The new Preview 1.2.2022.0 seems to fix all the VT colors issues I observed before, except one last case:

When the background color is the default (49), it is correctly kept transparent, but if the foreground color is transparent, which is possible when the background is 49 and then the colors are reversed using 7, it is rendered as black instead of transparent.

echo -e "\e[31m\u2580\e[7m\u2580\e[m" echo -e "\e[31m\u2590\e[7m\u25A0\e[27m\u258C\e[m"

In both cases, there should be no black square, the acrylic transparency should show through instead.