Yes, if you are zoomed out a lot, that work as expected, but the zoom factor that enable this behaviour depends on the grid settings too, so it’s very difficult to predict the behaviour. One thing is sure is that begin too early! I have tried many settings value with auto and standard mode grid, please could you try there is really something to improve, not really usable now.
If I setup my grid for spacing and divisions I don’t expect to get more division than my setup !
Maybe a solution could be to have a switch to activate or disable this behavior ( auto grid subdivision ). I hope you understand what I mean.