When using non-English input methods, holding down right Shift outputs an error in log

Using a non-English input method, holding down Shift on the right side of the keyboard will output an error in the log:

[Render thread/ERROR]: ########## GL ERROR ##########
[Render thread/ERROR]: @ Pre render
[Render thread/ERROR]: 65539: Invalid mouse button 99

Input method tested: Microsoft Chinese IME, Microsoft Japanese IME.