KDE taskbar labels disappear

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http://unix.stackexchange.com – I'm using Linux Mint 13 KDE. If I open more than 9 windows at once, all the labels on all my taskbar buttons disappear. Each one is left with only the icon, centered in its taskbar button. I found an Ubuntu bug about it ( https://bugs.launchpad.net/ubuntu/+source/kde-workspace/+bug/951553 ), but it's 8 months old and has no comments, which makes it seem like no one has seen it. What I want is for the taskbar buttons to just continue to get smaller and smaller the more windows I open, with the labels more and more aggressively truncated as the buttons get smaller. The labels already are t (HowTos)