How to close the small blue window appeared in the command window
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Does anyone experience this, where a small blue window appears in the command window and cannot be closed?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/190474/image.jpeg)
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Ameer Hamza
le 11 Mai 2018
Turn off the function hints from MATLAB Preferences. Run
preferences
Navigate to MATLAB > Keyboard, uncheck Enable function hints. If you want them to appear manually, press Ctrl + F1.
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Walter Roberson
le 11 Mai 2018
Historically this problem has been connected to using Unity on Linux.
The information there is about empty pop-ups, but the problem with pop-ups not being closable was related if I recall properly.
There have also sometime been really messy displays on Linux due to Java issues; https://www.mathworks.com/matlabcentral/answers/296491-problems-with-matlab-windows-both-editor-and-command-line-windows-when-using-r2016a-on-ubuntu-16-0
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