As my drawing starts to get more complex i found something ugly. While i drag a node and release the mousebutton to stop the movement it does not stop immediately. Instead Inkscape grabs the mouse location again as it redraws/refits the selection box, moving the node further as excepted (where the mouse currently is). This forces me to move the mouse to position, keep it pressed and release it while having it at the same position for a moment, before i can move it again.

The bigger problem is: If it really takes a while and i press Ctrl+Z (Undo), before the redrawing finished, it crashes reproducible. Seams to be an event-handling issue (order of instructions...)

More detailed description. I experimented with the settings inside the node options. If i deactivate the the option i marked inside the screenshot with the mouse cursor (don't know how it is called inside the English translation), then it does not happen anymore. In effect the drawing is changed while making modifications, which can be much slower then just updating the outline, but it does not show the bug. Guess this "new" feature, introduced in 0.47 is causing the problems with the event handling. It should ignore the drawing lag, like the traditional method does.

I don't have an answer, but just wanted to say this has happened to me:

If it really takes a while and i press Ctrl+Z (Undo), before the redrawing finished, it crashes reproducible

About the 'Undo' crash - please wait for and test again with 0.48.1 (or test with a current development build) - there have been some bugs fixed related to 'Undo' in the node tool, and IIRC some event handling stuff too.