We have taken the styles created by Anita Graser for OSM and saved them in PostGIS. We have also created a greyscale version of the style, and saved that in PostGIS as well.
I'm encountering a bit of a problem where the halo from the 'colour' version has crept into the 'greyscale' version, and I seem to be the only user in our group who is experiencing this:
In the image above, every other user sees white halos around the labels I see with yellow / orange halos.
Does QGIS cache style information somewhere? Is there a file I can clear? Again, of the several users consuming these styles, I'm the only one who sees the yellow/orange halos on the 'greyscale' style. This goes across various versions and platforms of QGIS that others are using.