Access violation when moving mouse over grid that's being refreshed

To reproduce this issue, do this:

1. write a query that produces output that doesn't fit in a column, so that a hint is shown when you move the mouse over the column.

2. press F9, and at the same time, keep moving the the mouse over the column in the grid in the result tab.

If it doesn't crash immediately, keep moving the mouse while pressing F9 repeatedly. It looks like once access violation is triggered per mouse event, so depending on your mouse moves you

Crash report is attached.

Oops, clicked post too soon before i finished my sentence.. but i guess the message is clear :)