Conflict with Breadcrumb NavXT

I have installed Customify 0.3.9 and Breadcrumb NavXT 7.1.0.
There seems to be a conflict with this plugin. For some reason the text color of the Customify Settings tabs on Post page is invisible.
And yes, I deactivated all my plugins and this error only happens when this plugin is activated.
It’s a simple mistake, but it ends up visually disturbing a little.

print: https://i.ibb.co/0tChGHL/screenshot.png