KDE: GIMP tool tips are blank

[RavenLX]

I am using the default theme "Breeze" for both GTK and KDE (ie. never 
changed it) in KDE. Whenever I use gimp and hover over something, the 
tool tip is blank. Now I am not so sure if it's GTK related or not 
because when I hover over something in Thunderbird, the tool tips are 
black with white letters.

I'd like to get black letters on light background in gimp (what I think 
it was supposed to be).

Anyone know of a fix for this?

BTW, I'm using Stretch with all the latest updates.