OS: Win 7 x64 KDevelop d/l here: http://krf.kollide.net/files/work/kdevelop/kdevelop-x64-setup-5.0-20160121.exe Reproducible: Always Steps to Reproduce: 1. Start KDevelop, a new session, and a new terminal project to get a simple C++ Hello World 2. Right under the "#include <iostream>" line, add this one: void func() __attribute__ ((foobar)); "foobar" should be underlined 3. Put the mouse over "foobar", the box "Problem in semantic analysis" appears 4. Hit Alt-Tab Actual Results: The box is always visible on the top of the new window, and will stay here until you go back to KDevelop Expected Results: The box disappears on Alt-Tab hit. This bug looks like this one : https://bugs.kde.org/show_bug.cgi?id=358499
*** This bug has been marked as a duplicate of bug 358499 ***