Comment # 1 on bug 1131299 from Simon Lees

It would be interesting to find out what your doing / have done to make this
happen, do you change fonts often or re run fontconfig alot as part of your
yast development? or did you have a extra large number of fonts installed at
some point in the past?

Its certainly not an issue i'm seeing here.

My 3 yo tumbleweed system:
simon@tek-a ~ ���   ls /var/cache/fontconfig/ -1 | wc -l
253

My 2 yo Leap system:
simon@tek-b ~ ���  ls -1  /var/cache/fontconfig/ | wc -l
57

I guess if i'm closer to a "Normal" user experience then you, I can see why
upstream hasn't worried too much about it.