Try turning off your hardware acceleration and then back on. Check graphics card drivers. You may need to restart AutoCAD after adjusting hardware acceleration.
"Another bug" is not a useful topic title or very friendly,
"Crosshair freezing with autocomplete" would be a better choice.
The reason why I mention the title is that when people are browsing the forum for info or searching for solutions using keywords it is helpful if the title relates to the specific problem. Otherwise all topics could just be called "I have a question". As ridiculous as that sounds you can see people using that title every day. You can always tag " - Bug?" on the end of the topic title if you feel it is necessary.
I would say turning Autocomplete off is a workaround.
Did you try the graphics card driver and hardware acceleration? Each version has different requirements and the hardware acceleration does not automatically turn on. In 2012 I get a very jumpy flickering cursor if the hardware acceleration is turned off. For 2011 I always tell people that it doesn't matter if you are a 2D user. But with 2012 and 2013 it is essential that you get the hardware acceleration working IMO.
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