[Evolution] HTML messages displayed in white color

[Carlo Delle Donne <carlo delle donne gmail com>]

Hi,

I've been using Evolution for a while now, and only since a few days
ago I've been experiencing the following issue: HTML messages are
displayed in a white font, over a white background, making it
impossible to read them.

Evolution version: 3.32.4
GNOME version: 3.32.2
GNOME theme: Adwaita-dark

Could it be a problem of the theme? It just sounds strange though,
because I've used this theme for quite some time now.

Thanks in advance.

Carlo