If you have something like a Do-loop with a breakpoint on one of the lines in it and you hover the cursor over a variable to see its value, then if you press F5 to continue and it comes back to the same breakpoint line, the value being shown doesn't change unless you move the cursor away from the variable and bring it back. At best, that is a nuisance and at worst, you may not realize what's going on and think that the value shown is correct when it isn't.