I have been using the Manjaro i3wm in 2-3 different machines. Lately, and seems more prevalent in the latest kernel on my laptop that every once in a while, particularly in Palemoon browser, but also in some other applications, I am unable to read the text I type into some of the dark theme entry boxes. The text colour is very dark grey to almost black. On other apps the same theme of box produces a nice white text so I can actually see what I am typing.
I have been unable to determine any consistency and I have not been mucking around with any theming.