Hey CriErr,
I’m not sure why I didn’t realize this sooner, but we already have this entered as a bug (UE-21203). It has to do with how the UE4’s Slate UI handles the text in a tab when the tab shrinks for whatever reason (a ton of other tabs, making the window smaller, etc).
Thanks for reporting this though. It is still under investigation though and there won’t be a fix for 4.10.
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