Hey,
I expect you not to have this issue anymore, but still, for anyone coming across this exact problem:
This is not a bug, it’s (as I understand it) working as intended.
You are making a style which you only feed with the foreground color, if you have anything written in that widget, it’s probably disappearing and only leaving that color.
You have to get your existing widget, getting it’s style, breaking it, feeding everything but the color from the broken style to a “make style” and additionally feed the color you choose to it (like in the picture above)
The mistake here was to create a style that only has a color. No font size, background color etc.