Solve ExtJS Bug

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$30 - $40

Project Description:

I need someone to solve a bug in ExtJS Library 3.x The bug is not present in version 4.x, but I need to solve it in version 3.x.
Just use IE 9 or higher, and go to
Click the "Hello World" button and then try to move the window (by dragging the title bar). It moves, but when you release the mouse, the cursor remains the cross, it does not revert back to normal cursor. To make it revert back to normal (arrow), you need to click anywhere.

This bug only happens with IE (not with Chrome or other).

Please solve it.

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